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Finding the Fourth Proportional to 638,711.62, 880,394.06 and 466,356.30

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Solution

The fourth proportional to 638,711.62, 880,394.06 and 466,356.30 is: 642,821.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,711.62 : 880,394.06 = 466,356.30 : x
  2. Step 2: Convert to fraction form
    638,711.62/880,394.06 = 466,356.30/x
  3. Step 3: Cross multiply
    638,711.62x = 880,394.06 × 466,356.30
  4. Step 4: Simplify right side
    638,711.62x = 410,577,316,363.58
  5. Step 5: Solve for x
    x = 410,577,316,363.58/638,711.62
  6. Step 6: Final answer
    x = 642,821.12

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Double scale
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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.