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Finding the Fourth Proportional to 648,292.80, 972,001.80 and 344,737.20

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Solution

The fourth proportional to 648,292.80, 972,001.80 and 344,737.20 is: 516,873.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,292.80 : 972,001.80 = 344,737.20 : x
  2. Step 2: Convert to fraction form
    648,292.80/972,001.80 = 344,737.20/x
  3. Step 3: Cross multiply
    648,292.80x = 972,001.80 × 344,737.20
  4. Step 4: Simplify right side
    648,292.80x = 335,085,178,926.96
  5. Step 5: Solve for x
    x = 335,085,178,926.96/648,292.80
  6. Step 6: Final answer
    x = 516,873.21

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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.