Home / 1,216,721,382.12-1,679,075,954.64-659,804,281.56

Finding the Fourth Proportional to 1,216,721,382.12, 1,679,075,954.64 and 659,804,281.56

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Solution

The fourth proportional to 1,216,721,382.12, 1,679,075,954.64 and 659,804,281.56 is: 910,530,151.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,721,382.12 : 1,679,075,954.64 = 659,804,281.56 : x
  2. Step 2: Convert to fraction form
    1,216,721,382.12/1,679,075,954.64 = 659,804,281.56/x
  3. Step 3: Cross multiply
    1,216,721,382.12x = 1,679,075,954.64 × 659,804,281.56
  4. Step 4: Simplify right side
    1,216,721,382.12x = 1,107,861,503,935,916,288
  5. Step 5: Solve for x
    x = 1,107,861,503,935,916,288/1,216,721,382.12
  6. Step 6: Final answer
    x = 910,530,151.12

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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.