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Finding the Fourth Proportional to 530,469.95, 732,057.87 and 288,759.47

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Solution

The fourth proportional to 530,469.95, 732,057.87 and 288,759.47 is: 398,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,469.95 : 732,057.87 = 288,759.47 : x
  2. Step 2: Convert to fraction form
    530,469.95/732,057.87 = 288,759.47/x
  3. Step 3: Cross multiply
    530,469.95x = 732,057.87 × 288,759.47
  4. Step 4: Simplify right side
    530,469.95x = 211,388,641,803.23
  5. Step 5: Solve for x
    x = 211,388,641,803.23/530,469.95
  6. Step 6: Final answer
    x = 398,493.15

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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.