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Finding the Fourth Proportional to 647,041,195.60, 970,561,793.40 and 493,986,187.60

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Solution

The fourth proportional to 647,041,195.60, 970,561,793.40 and 493,986,187.60 is: 740,979,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,041,195.60 : 970,561,793.40 = 493,986,187.60 : x
  2. Step 2: Convert to fraction form
    647,041,195.60/970,561,793.40 = 493,986,187.60/x
  3. Step 3: Cross multiply
    647,041,195.60x = 970,561,793.40 × 493,986,187.60
  4. Step 4: Simplify right side
    647,041,195.60x = 479,444,120,151,884,864
  5. Step 5: Solve for x
    x = 479,444,120,151,884,864/647,041,195.60
  6. Step 6: Final answer
    x = 740,979,281.40

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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.