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Finding the Fourth Proportional to 518,596.85, 777,887.52 and 316,252.40

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Solution

The fourth proportional to 518,596.85, 777,887.52 and 316,252.40 is: 474,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,596.85 : 777,887.52 = 316,252.40 : x
  2. Step 2: Convert to fraction form
    518,596.85/777,887.52 = 316,252.40/x
  3. Step 3: Cross multiply
    518,596.85x = 777,887.52 × 316,252.40
  4. Step 4: Simplify right side
    518,596.85x = 246,008,795,130.05
  5. Step 5: Solve for x
    x = 246,008,795,130.05/518,596.85
  6. Step 6: Final answer
    x = 474,373.87

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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.