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Finding the Fourth Proportional to 648,149.20, 972,223.80 and 608,750.80

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Solution

The fourth proportional to 648,149.20, 972,223.80 and 608,750.80 is: 913,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,149.20 : 972,223.80 = 608,750.80 : x
  2. Step 2: Convert to fraction form
    648,149.20/972,223.80 = 608,750.80/x
  3. Step 3: Cross multiply
    648,149.20x = 972,223.80 × 608,750.80
  4. Step 4: Simplify right side
    648,149.20x = 591,842,016,029.04
  5. Step 5: Solve for x
    x = 591,842,016,029.04/648,149.20
  6. Step 6: Final answer
    x = 913,126.20

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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.