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Finding the Fourth Proportional to 530,471.26, 732,059.67 and 288,760.78

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Solution

The fourth proportional to 530,471.26, 732,059.67 and 288,760.78 is: 398,494.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,471.26 : 732,059.67 = 288,760.78 : x
  2. Step 2: Convert to fraction form
    530,471.26/732,059.67 = 288,760.78/x
  3. Step 3: Cross multiply
    530,471.26x = 732,059.67 × 288,760.78
  4. Step 4: Simplify right side
    530,471.26x = 211,390,121,315.74
  5. Step 5: Solve for x
    x = 211,390,121,315.74/530,471.26
  6. Step 6: Final answer
    x = 398,494.96

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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.