Home / 667,443.90-1,001,453.85-387,200.70

Finding the Fourth Proportional to 667,443.90, 1,001,453.85 and 387,200.70

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Solution

The fourth proportional to 667,443.90, 1,001,453.85 and 387,200.70 is: 580,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,443.90 : 1,001,453.85 = 387,200.70 : x
  2. Step 2: Convert to fraction form
    667,443.90/1,001,453.85 = 387,200.70/x
  3. Step 3: Cross multiply
    667,443.90x = 1,001,453.85 × 387,200.70
  4. Step 4: Simplify right side
    667,443.90x = 387,763,631,737.70
  5. Step 5: Solve for x
    x = 387,763,631,737.70/667,443.90
  6. Step 6: Final answer
    x = 580,968.13

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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.