Home / 648,560.45-972,373.20-395,781.53

Finding the Fourth Proportional to 648,560.45, 972,373.20 and 395,781.53

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Solution

The fourth proportional to 648,560.45, 972,373.20 and 395,781.53 is: 593,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,560.45 : 972,373.20 = 395,781.53 : x
  2. Step 2: Convert to fraction form
    648,560.45/972,373.20 = 395,781.53/x
  3. Step 3: Cross multiply
    648,560.45x = 972,373.20 × 395,781.53
  4. Step 4: Simplify right side
    648,560.45x = 384,847,347,965.13
  5. Step 5: Solve for x
    x = 384,847,347,965.13/648,560.45
  6. Step 6: Final answer
    x = 593,387.02

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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.