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Finding the Fourth Proportional to 613,524.76, 846,534.02 and 387,039

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Solution

The fourth proportional to 613,524.76, 846,534.02 and 387,039 is: 534,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,524.76 : 846,534.02 = 387,039 : x
  2. Step 2: Convert to fraction form
    613,524.76/846,534.02 = 387,039/x
  3. Step 3: Cross multiply
    613,524.76x = 846,534.02 × 387,039
  4. Step 4: Simplify right side
    613,524.76x = 327,641,680,566.78
  5. Step 5: Solve for x
    x = 327,641,680,566.78/613,524.76
  6. Step 6: Final answer
    x = 534,031.72

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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.