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Finding the Fourth Proportional to 605,030,601.60, 907,545,902.40 and 398,406,340.80

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Solution

The fourth proportional to 605,030,601.60, 907,545,902.40 and 398,406,340.80 is: 597,609,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,030,601.60 : 907,545,902.40 = 398,406,340.80 : x
  2. Step 2: Convert to fraction form
    605,030,601.60/907,545,902.40 = 398,406,340.80/x
  3. Step 3: Cross multiply
    605,030,601.60x = 907,545,902.40 × 398,406,340.80
  4. Step 4: Simplify right side
    605,030,601.60x = 361,572,042,083,217,920
  5. Step 5: Solve for x
    x = 361,572,042,083,217,920/605,030,601.60
  6. Step 6: Final answer
    x = 597,609,511.20

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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.