Home / 918,279.60-1,377,419.40-493,126.80

Finding the Fourth Proportional to 918,279.60, 1,377,419.40 and 493,126.80

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Solution

The fourth proportional to 918,279.60, 1,377,419.40 and 493,126.80 is: 739,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,279.60 : 1,377,419.40 = 493,126.80 : x
  2. Step 2: Convert to fraction form
    918,279.60/1,377,419.40 = 493,126.80/x
  3. Step 3: Cross multiply
    918,279.60x = 1,377,419.40 × 493,126.80
  4. Step 4: Simplify right side
    918,279.60x = 679,242,420,979.92
  5. Step 5: Solve for x
    x = 679,242,420,979.92/918,279.60
  6. Step 6: Final answer
    x = 739,690.20

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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.