Home / 918,086.20-1,377,129.30-412,451.80

Finding the Fourth Proportional to 918,086.20, 1,377,129.30 and 412,451.80

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Solution

The fourth proportional to 918,086.20, 1,377,129.30 and 412,451.80 is: 618,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,086.20 : 1,377,129.30 = 412,451.80 : x
  2. Step 2: Convert to fraction form
    918,086.20/1,377,129.30 = 412,451.80/x
  3. Step 3: Cross multiply
    918,086.20x = 1,377,129.30 × 412,451.80
  4. Step 4: Simplify right side
    918,086.20x = 567,999,458,617.74
  5. Step 5: Solve for x
    x = 567,999,458,617.74/918,086.20
  6. Step 6: Final answer
    x = 618,677.70

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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.