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Finding the Fourth Proportional to 647,885.40, 972,314.10 and 332,179.80

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Solution

The fourth proportional to 647,885.40, 972,314.10 and 332,179.80 is: 498,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,885.40 : 972,314.10 = 332,179.80 : x
  2. Step 2: Convert to fraction form
    647,885.40/972,314.10 = 332,179.80/x
  3. Step 3: Cross multiply
    647,885.40x = 972,314.10 × 332,179.80
  4. Step 4: Simplify right side
    647,885.40x = 322,983,103,275.18
  5. Step 5: Solve for x
    x = 322,983,103,275.18/647,885.40
  6. Step 6: Final answer
    x = 498,518.88

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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.