Home / 721,607,037.76-995,817,712.20-391,582,176.76

Finding the Fourth Proportional to 721,607,037.76, 995,817,712.20 and 391,582,176.76

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Solution

The fourth proportional to 721,607,037.76, 995,817,712.20 and 391,582,176.76 is: 540,383,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,607,037.76 : 995,817,712.20 = 391,582,176.76 : x
  2. Step 2: Convert to fraction form
    721,607,037.76/995,817,712.20 = 391,582,176.76/x
  3. Step 3: Cross multiply
    721,607,037.76x = 995,817,712.20 × 391,582,176.76
  4. Step 4: Simplify right side
    721,607,037.76x = 389,944,467,394,460,160
  5. Step 5: Solve for x
    x = 389,944,467,394,460,160/721,607,037.76
  6. Step 6: Final answer
    x = 540,383,403.98

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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.