Home / 721,797,095.76-996,053,320.08-391,765,148.88

Finding the Fourth Proportional to 721,797,095.76, 996,053,320.08 and 391,765,148.88

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Solution

The fourth proportional to 721,797,095.76, 996,053,320.08 and 391,765,148.88 is: 540,621,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,797,095.76 : 996,053,320.08 = 391,765,148.88 : x
  2. Step 2: Convert to fraction form
    721,797,095.76/996,053,320.08 = 391,765,148.88/x
  3. Step 3: Cross multiply
    721,797,095.76x = 996,053,320.08 × 391,765,148.88
  4. Step 4: Simplify right side
    721,797,095.76x = 390,218,977,233,559,488
  5. Step 5: Solve for x
    x = 390,218,977,233,559,488/721,797,095.76
  6. Step 6: Final answer
    x = 540,621,428.83

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1.5x scale

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.