Home / 918,623.80-1,377,279.60-412,770.70

Finding the Fourth Proportional to 918,623.80, 1,377,279.60 and 412,770.70

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Solution

The fourth proportional to 918,623.80, 1,377,279.60 and 412,770.70 is: 618,861.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,623.80 : 1,377,279.60 = 412,770.70 : x
  2. Step 2: Convert to fraction form
    918,623.80/1,377,279.60 = 412,770.70/x
  3. Step 3: Cross multiply
    918,623.80x = 1,377,279.60 × 412,770.70
  4. Step 4: Simplify right side
    918,623.80x = 568,500,664,587.72
  5. Step 5: Solve for x
    x = 568,500,664,587.72/918,623.80
  6. Step 6: Final answer
    x = 618,861.24

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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.