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Finding the Fourth Proportional to 486,656.10, 729,984.15 and 429,575.40

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Solution

The fourth proportional to 486,656.10, 729,984.15 and 429,575.40 is: 644,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,656.10 : 729,984.15 = 429,575.40 : x
  2. Step 2: Convert to fraction form
    486,656.10/729,984.15 = 429,575.40/x
  3. Step 3: Cross multiply
    486,656.10x = 729,984.15 × 429,575.40
  4. Step 4: Simplify right side
    486,656.10x = 313,583,233,229.91
  5. Step 5: Solve for x
    x = 313,583,233,229.91/486,656.10
  6. Step 6: Final answer
    x = 644,363.10

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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.