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Finding the Fourth Proportional to 486,556.10, 729,834.15 and 458,999.90

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Solution

The fourth proportional to 486,556.10, 729,834.15 and 458,999.90 is: 688,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,556.10 : 729,834.15 = 458,999.90 : x
  2. Step 2: Convert to fraction form
    486,556.10/729,834.15 = 458,999.90/x
  3. Step 3: Cross multiply
    486,556.10x = 729,834.15 × 458,999.90
  4. Step 4: Simplify right side
    486,556.10x = 334,993,801,866.59
  5. Step 5: Solve for x
    x = 334,993,801,866.59/486,556.10
  6. Step 6: Final answer
    x = 688,499.85

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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.