Home / 728,787.66-1,005,724.32-406,497.49

Finding the Fourth Proportional to 728,787.66, 1,005,724.32 and 406,497.49

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Solution

The fourth proportional to 728,787.66, 1,005,724.32 and 406,497.49 is: 560,965.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,787.66 : 1,005,724.32 = 406,497.49 : x
  2. Step 2: Convert to fraction form
    728,787.66/1,005,724.32 = 406,497.49/x
  3. Step 3: Cross multiply
    728,787.66x = 1,005,724.32 × 406,497.49
  4. Step 4: Simplify right side
    728,787.66x = 408,824,411,711.96
  5. Step 5: Solve for x
    x = 408,824,411,711.96/728,787.66
  6. Step 6: Final answer
    x = 560,965.06

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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.