Home / 749,088,000.80-1,123,632,001.20-689,965,517.60

Finding the Fourth Proportional to 749,088,000.80, 1,123,632,001.20 and 689,965,517.60

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Solution

The fourth proportional to 749,088,000.80, 1,123,632,001.20 and 689,965,517.60 is: 1,034,948,276.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,088,000.80 : 1,123,632,001.20 = 689,965,517.60 : x
  2. Step 2: Convert to fraction form
    749,088,000.80/1,123,632,001.20 = 689,965,517.60/x
  3. Step 3: Cross multiply
    749,088,000.80x = 1,123,632,001.20 × 689,965,517.60
  4. Step 4: Simplify right side
    749,088,000.80x = 775,267,335,299,881,856
  5. Step 5: Solve for x
    x = 775,267,335,299,881,856/749,088,000.80
  6. Step 6: Final answer
    x = 1,034,948,276.40

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1.5x scale

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.