Home / 1,216,721,386.62-1,679,075,960.85-659,804,286.06

Finding the Fourth Proportional to 1,216,721,386.62, 1,679,075,960.85 and 659,804,286.06

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Solution

The fourth proportional to 1,216,721,386.62, 1,679,075,960.85 and 659,804,286.06 is: 910,530,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,721,386.62 : 1,679,075,960.85 = 659,804,286.06 : x
  2. Step 2: Convert to fraction form
    1,216,721,386.62/1,679,075,960.85 = 659,804,286.06/x
  3. Step 3: Cross multiply
    1,216,721,386.62x = 1,679,075,960.85 × 659,804,286.06
  4. Step 4: Simplify right side
    1,216,721,386.62x = 1,107,861,515,589,142,656
  5. Step 5: Solve for x
    x = 1,107,861,515,589,142,656/1,216,721,386.62
  6. Step 6: Final answer
    x = 910,530,157.33

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Half scale
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Double scale
Find fourth proportional to 1,216,721,387.62, 1,679,075,962.23 and 659,804,287.06
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.