Home / 928,872.64-1,281,720.18-515,402.56

Finding the Fourth Proportional to 928,872.64, 1,281,720.18 and 515,402.56

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Solution

The fourth proportional to 928,872.64, 1,281,720.18 and 515,402.56 is: 711,186.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,872.64 : 1,281,720.18 = 515,402.56 : x
  2. Step 2: Convert to fraction form
    928,872.64/1,281,720.18 = 515,402.56/x
  3. Step 3: Cross multiply
    928,872.64x = 1,281,720.18 × 515,402.56
  4. Step 4: Simplify right side
    928,872.64x = 660,601,861,975.66
  5. Step 5: Solve for x
    x = 660,601,861,975.66/928,872.64
  6. Step 6: Final answer
    x = 711,186.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.