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Finding the Fourth Proportional to 528,845.90, 792,102.45 and 318,116.30

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Solution

The fourth proportional to 528,845.90, 792,102.45 and 318,116.30 is: 476,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,845.90 : 792,102.45 = 318,116.30 : x
  2. Step 2: Convert to fraction form
    528,845.90/792,102.45 = 318,116.30/x
  3. Step 3: Cross multiply
    528,845.90x = 792,102.45 × 318,116.30
  4. Step 4: Simplify right side
    528,845.90x = 251,980,700,614.94
  5. Step 5: Solve for x
    x = 251,980,700,614.94/528,845.90
  6. Step 6: Final answer
    x = 476,472.83

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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.