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Finding the Fourth Proportional to 518,597.85, 777,889.02 and 316,253.40

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Solution

The fourth proportional to 518,597.85, 777,889.02 and 316,253.40 is: 474,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,597.85 : 777,889.02 = 316,253.40 : x
  2. Step 2: Convert to fraction form
    518,597.85/777,889.02 = 316,253.40/x
  3. Step 3: Cross multiply
    518,597.85x = 777,889.02 × 316,253.40
  4. Step 4: Simplify right side
    518,597.85x = 246,010,047,397.67
  5. Step 5: Solve for x
    x = 246,010,047,397.67/518,597.85
  6. Step 6: Final answer
    x = 474,375.37

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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.