Home / 721,607,041.28-995,817,717.03-391,582,180.28

Finding the Fourth Proportional to 721,607,041.28, 995,817,717.03 and 391,582,180.28

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Solution

The fourth proportional to 721,607,041.28, 995,817,717.03 and 391,582,180.28 is: 540,383,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,607,041.28 : 995,817,717.03 = 391,582,180.28 : x
  2. Step 2: Convert to fraction form
    721,607,041.28/995,817,717.03 = 391,582,180.28/x
  3. Step 3: Cross multiply
    721,607,041.28x = 995,817,717.03 × 391,582,180.28
  4. Step 4: Simplify right side
    721,607,041.28x = 389,944,472,796,059,456
  5. Step 5: Solve for x
    x = 389,944,472,796,059,456/721,607,041.28
  6. Step 6: Final answer
    x = 540,383,408.82

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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.