Home / 918,344.80-1,377,517.20-665,090.20

Finding the Fourth Proportional to 918,344.80, 1,377,517.20 and 665,090.20

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Solution

The fourth proportional to 918,344.80, 1,377,517.20 and 665,090.20 is: 997,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,344.80 : 1,377,517.20 = 665,090.20 : x
  2. Step 2: Convert to fraction form
    918,344.80/1,377,517.20 = 665,090.20/x
  3. Step 3: Cross multiply
    918,344.80x = 1,377,517.20 × 665,090.20
  4. Step 4: Simplify right side
    918,344.80x = 916,173,190,051.44
  5. Step 5: Solve for x
    x = 916,173,190,051.44/918,344.80
  6. Step 6: Final answer
    x = 997,635.30

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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.