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Finding the Fourth Proportional to 668,885.10, 1,001,772.45 and 457,377.90

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Solution

The fourth proportional to 668,885.10, 1,001,772.45 and 457,377.90 is: 685,003.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,885.10 : 1,001,772.45 = 457,377.90 : x
  2. Step 2: Convert to fraction form
    668,885.10/1,001,772.45 = 457,377.90/x
  3. Step 3: Cross multiply
    668,885.10x = 1,001,772.45 × 457,377.90
  4. Step 4: Simplify right side
    668,885.10x = 458,188,579,458.86
  5. Step 5: Solve for x
    x = 458,188,579,458.86/668,885.10
  6. Step 6: Final answer
    x = 685,003.42

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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.