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Finding the Fourth Proportional to 636,792.32, 878,767.04 and 350,312.80

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Solution

The fourth proportional to 636,792.32, 878,767.04 and 350,312.80 is: 483,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,792.32 : 878,767.04 = 350,312.80 : x
  2. Step 2: Convert to fraction form
    636,792.32/878,767.04 = 350,312.80/x
  3. Step 3: Cross multiply
    636,792.32x = 878,767.04 × 350,312.80
  4. Step 4: Simplify right side
    636,792.32x = 307,843,342,330.11
  5. Step 5: Solve for x
    x = 307,843,342,330.11/636,792.32
  6. Step 6: Final answer
    x = 483,428.16

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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.