Home / 721,797,099.76-996,053,325.60-391,765,152.88

Finding the Fourth Proportional to 721,797,099.76, 996,053,325.60 and 391,765,152.88

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Solution

The fourth proportional to 721,797,099.76, 996,053,325.60 and 391,765,152.88 is: 540,621,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,797,099.76 : 996,053,325.60 = 391,765,152.88 : x
  2. Step 2: Convert to fraction form
    721,797,099.76/996,053,325.60 = 391,765,152.88/x
  3. Step 3: Cross multiply
    721,797,099.76x = 996,053,325.60 × 391,765,152.88
  4. Step 4: Simplify right side
    721,797,099.76x = 390,218,983,380,316,416
  5. Step 5: Solve for x
    x = 390,218,983,380,316,416/721,797,099.76
  6. Step 6: Final answer
    x = 540,621,434.35

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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.