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Finding the Fourth Proportional to 513,863.17, 771,060.53 and 372,870.87

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Solution

The fourth proportional to 513,863.17, 771,060.53 and 372,870.87 is: 559,499.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,863.17 : 771,060.53 = 372,870.87 : x
  2. Step 2: Convert to fraction form
    513,863.17/771,060.53 = 372,870.87/x
  3. Step 3: Cross multiply
    513,863.17x = 771,060.53 × 372,870.87
  4. Step 4: Simplify right side
    513,863.17x = 287,506,010,643.76
  5. Step 5: Solve for x
    x = 287,506,010,643.76/513,863.17
  6. Step 6: Final answer
    x = 559,499.16

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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.