Home / 918,056.20-1,377,084.30-412,421.80

Finding the Fourth Proportional to 918,056.20, 1,377,084.30 and 412,421.80

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Solution

The fourth proportional to 918,056.20, 1,377,084.30 and 412,421.80 is: 618,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,056.20 : 1,377,084.30 = 412,421.80 : x
  2. Step 2: Convert to fraction form
    918,056.20/1,377,084.30 = 412,421.80/x
  3. Step 3: Cross multiply
    918,056.20x = 1,377,084.30 × 412,421.80
  4. Step 4: Simplify right side
    918,056.20x = 567,939,585,757.74
  5. Step 5: Solve for x
    x = 567,939,585,757.74/918,056.20
  6. Step 6: Final answer
    x = 618,632.70

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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.