Home / 918,084.20-1,377,126.30-412,449.80

Finding the Fourth Proportional to 918,084.20, 1,377,126.30 and 412,449.80

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Solution

The fourth proportional to 918,084.20, 1,377,126.30 and 412,449.80 is: 618,674.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,084.20 : 1,377,126.30 = 412,449.80 : x
  2. Step 2: Convert to fraction form
    918,084.20/1,377,126.30 = 412,449.80/x
  3. Step 3: Cross multiply
    918,084.20x = 1,377,126.30 × 412,449.80
  4. Step 4: Simplify right side
    918,084.20x = 567,995,467,009.74
  5. Step 5: Solve for x
    x = 567,995,467,009.74/918,084.20
  6. Step 6: Final answer
    x = 618,674.70

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Double scale
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Similar ratio
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1.5x scale

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.