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Finding the Fourth Proportional to 486,000.10, 729,000.15 and 423,792.10

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Solution

The fourth proportional to 486,000.10, 729,000.15 and 423,792.10 is: 635,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,000.10 : 729,000.15 = 423,792.10 : x
  2. Step 2: Convert to fraction form
    486,000.10/729,000.15 = 423,792.10/x
  3. Step 3: Cross multiply
    486,000.10x = 729,000.15 × 423,792.10
  4. Step 4: Simplify right side
    486,000.10x = 308,944,504,468.82
  5. Step 5: Solve for x
    x = 308,944,504,468.82/486,000.10
  6. Step 6: Final answer
    x = 635,688.15

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.