Home / 688,305,819.45-1,031,723,550.60-392,564,217.36

Finding the Fourth Proportional to 688,305,819.45, 1,031,723,550.60 and 392,564,217.36

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Solution

The fourth proportional to 688,305,819.45, 1,031,723,550.60 and 392,564,217.36 is: 588,427,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,305,819.45 : 1,031,723,550.60 = 392,564,217.36 : x
  2. Step 2: Convert to fraction form
    688,305,819.45/1,031,723,550.60 = 392,564,217.36/x
  3. Step 3: Cross multiply
    688,305,819.45x = 1,031,723,550.60 × 392,564,217.36
  4. Step 4: Simplify right side
    688,305,819.45x = 405,017,748,173,169,408
  5. Step 5: Solve for x
    x = 405,017,748,173,169,408/688,305,819.45
  6. Step 6: Final answer
    x = 588,427,028.70

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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.