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Finding the Fourth Proportional to 513,863.67, 771,061.28 and 372,871.37

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Solution

The fourth proportional to 513,863.67, 771,061.28 and 372,871.37 is: 559,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,863.67 : 771,061.28 = 372,871.37 : x
  2. Step 2: Convert to fraction form
    513,863.67/771,061.28 = 372,871.37/x
  3. Step 3: Cross multiply
    513,863.67x = 771,061.28 × 372,871.37
  4. Step 4: Simplify right side
    513,863.67x = 287,506,675,827.55
  5. Step 5: Solve for x
    x = 287,506,675,827.55/513,863.67
  6. Step 6: Final answer
    x = 559,499.91

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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.