Home / 1,188,000.70-1,782,001.05-478,537.90

Finding the Fourth Proportional to 1,188,000.70, 1,782,001.05 and 478,537.90

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Solution

The fourth proportional to 1,188,000.70, 1,782,001.05 and 478,537.90 is: 717,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,000.70 : 1,782,001.05 = 478,537.90 : x
  2. Step 2: Convert to fraction form
    1,188,000.70/1,782,001.05 = 478,537.90/x
  3. Step 3: Cross multiply
    1,188,000.70x = 1,782,001.05 × 478,537.90
  4. Step 4: Simplify right side
    1,188,000.70x = 852,755,040,264.80
  5. Step 5: Solve for x
    x = 852,755,040,264.80/1,188,000.70
  6. Step 6: Final answer
    x = 717,806.85

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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.