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Finding the Fourth Proportional to 648,005.80, 972,008.70 and 618,481.30

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Solution

The fourth proportional to 648,005.80, 972,008.70 and 618,481.30 is: 927,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,005.80 : 972,008.70 = 618,481.30 : x
  2. Step 2: Convert to fraction form
    648,005.80/972,008.70 = 618,481.30/x
  3. Step 3: Cross multiply
    648,005.80x = 972,008.70 × 618,481.30
  4. Step 4: Simplify right side
    648,005.80x = 601,169,204,387.31
  5. Step 5: Solve for x
    x = 601,169,204,387.31/648,005.80
  6. Step 6: Final answer
    x = 927,721.95

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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.