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Finding the Fourth Proportional to 478,515, 660,209.04 and 284,767.39

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Solution

The fourth proportional to 478,515, 660,209.04 and 284,767.39 is: 392,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,515 : 660,209.04 = 284,767.39 : x
  2. Step 2: Convert to fraction form
    478,515/660,209.04 = 284,767.39/x
  3. Step 3: Cross multiply
    478,515x = 660,209.04 × 284,767.39
  4. Step 4: Simplify right side
    478,515x = 188,006,005,175.21
  5. Step 5: Solve for x
    x = 188,006,005,175.21/478,515
  6. Step 6: Final answer
    x = 392,894.70

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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.