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Finding the Fourth Proportional to 453,399.48, 679,311.06 and 318,176.76

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Solution

The fourth proportional to 453,399.48, 679,311.06 and 318,176.76 is: 476,712.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,399.48 : 679,311.06 = 318,176.76 : x
  2. Step 2: Convert to fraction form
    453,399.48/679,311.06 = 318,176.76/x
  3. Step 3: Cross multiply
    453,399.48x = 679,311.06 × 318,176.76
  4. Step 4: Simplify right side
    453,399.48x = 216,140,992,102.97
  5. Step 5: Solve for x
    x = 216,140,992,102.97/453,399.48
  6. Step 6: Final answer
    x = 476,712.04

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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.