Home / 521,472,807.60-782,209,211.40-279,608,103.60

Finding the Fourth Proportional to 521,472,807.60, 782,209,211.40 and 279,608,103.60

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Solution

The fourth proportional to 521,472,807.60, 782,209,211.40 and 279,608,103.60 is: 419,412,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,472,807.60 : 782,209,211.40 = 279,608,103.60 : x
  2. Step 2: Convert to fraction form
    521,472,807.60/782,209,211.40 = 279,608,103.60/x
  3. Step 3: Cross multiply
    521,472,807.60x = 782,209,211.40 × 279,608,103.60
  4. Step 4: Simplify right side
    521,472,807.60x = 218,712,034,218,005,504
  5. Step 5: Solve for x
    x = 218,712,034,218,005,504/521,472,807.60
  6. Step 6: Final answer
    x = 419,412,155.40

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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.