Home / 721,607,038.01-995,817,712.55-391,582,177.01

Finding the Fourth Proportional to 721,607,038.01, 995,817,712.55 and 391,582,177.01

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Solution

The fourth proportional to 721,607,038.01, 995,817,712.55 and 391,582,177.01 is: 540,383,404.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,607,038.01 : 995,817,712.55 = 391,582,177.01 : x
  2. Step 2: Convert to fraction form
    721,607,038.01/995,817,712.55 = 391,582,177.01/x
  3. Step 3: Cross multiply
    721,607,038.01x = 995,817,712.55 × 391,582,177.01
  4. Step 4: Simplify right side
    721,607,038.01x = 389,944,467,778,510,400
  5. Step 5: Solve for x
    x = 389,944,467,778,510,400/721,607,038.01
  6. Step 6: Final answer
    x = 540,383,404.32

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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.