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Finding the Fourth Proportional to 518,595.85, 777,886.02 and 316,251.40

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Solution

The fourth proportional to 518,595.85, 777,886.02 and 316,251.40 is: 474,372.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,595.85 : 777,886.02 = 316,251.40 : x
  2. Step 2: Convert to fraction form
    518,595.85/777,886.02 = 316,251.40/x
  3. Step 3: Cross multiply
    518,595.85x = 777,886.02 × 316,251.40
  4. Step 4: Simplify right side
    518,595.85x = 246,007,542,865.43
  5. Step 5: Solve for x
    x = 246,007,542,865.43/518,595.85
  6. Step 6: Final answer
    x = 474,372.37

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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.