Home / 688,305,819.95-1,031,723,551.35-392,564,217.86

Finding the Fourth Proportional to 688,305,819.95, 1,031,723,551.35 and 392,564,217.86

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Solution

The fourth proportional to 688,305,819.95, 1,031,723,551.35 and 392,564,217.86 is: 588,427,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,305,819.95 : 1,031,723,551.35 = 392,564,217.86 : x
  2. Step 2: Convert to fraction form
    688,305,819.95/1,031,723,551.35 = 392,564,217.86/x
  3. Step 3: Cross multiply
    688,305,819.95x = 1,031,723,551.35 × 392,564,217.86
  4. Step 4: Simplify right side
    688,305,819.95x = 405,017,748,978,295,680
  5. Step 5: Solve for x
    x = 405,017,748,978,295,680/688,305,819.95
  6. Step 6: Final answer
    x = 588,427,029.44

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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.