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Finding the Fourth Proportional to 653,059.78, 979,404.18 and 253,615.30

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Solution

The fourth proportional to 653,059.78, 979,404.18 and 253,615.30 is: 380,350.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,059.78 : 979,404.18 = 253,615.30 : x
  2. Step 2: Convert to fraction form
    653,059.78/979,404.18 = 253,615.30/x
  3. Step 3: Cross multiply
    653,059.78x = 979,404.18 × 253,615.30
  4. Step 4: Simplify right side
    653,059.78x = 248,391,884,931.95
  5. Step 5: Solve for x
    x = 248,391,884,931.95/653,059.78
  6. Step 6: Final answer
    x = 380,350.92

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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.