Home / 521,520,779,877.30-782,281,169,815.95-149,291,000,421.30

Finding the Fourth Proportional to 521,520,779,877.30, 782,281,169,815.95 and 149,291,000,421.30

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Solution

The fourth proportional to 521,520,779,877.30, 782,281,169,815.95 and 149,291,000,421.30 is: 223,936,500,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,779,877.30 : 782,281,169,815.95 = 149,291,000,421.30 : x
  2. Step 2: Convert to fraction form
    521,520,779,877.30/782,281,169,815.95 = 149,291,000,421.30/x
  3. Step 3: Cross multiply
    521,520,779,877.30x = 782,281,169,815.95 × 149,291,000,421.30
  4. Step 4: Simplify right side
    521,520,779,877.30x = 116,787,538,452,568,034,246,656
  5. Step 5: Solve for x
    x = 116,787,538,452,568,034,246,656/521,520,779,877.30
  6. Step 6: Final answer
    x = 223,936,500,631.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.