Home / 891,115.74-1,229,804.78-509,134.32

Finding the Fourth Proportional to 891,115.74, 1,229,804.78 and 509,134.32

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Solution

The fourth proportional to 891,115.74, 1,229,804.78 and 509,134.32 is: 702,642.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,115.74 : 1,229,804.78 = 509,134.32 : x
  2. Step 2: Convert to fraction form
    891,115.74/1,229,804.78 = 509,134.32/x
  3. Step 3: Cross multiply
    891,115.74x = 1,229,804.78 × 509,134.32
  4. Step 4: Simplify right side
    891,115.74x = 626,135,817,852.38
  5. Step 5: Solve for x
    x = 626,135,817,852.38/891,115.74
  6. Step 6: Final answer
    x = 702,642.53

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Half scale
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Double scale
Find fourth proportional to 891,116.74, 1,229,806.16 and 509,135.32
Similar ratio
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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.