Home / 918,177.40-1,377,266.10-287,090.20

Finding the Fourth Proportional to 918,177.40, 1,377,266.10 and 287,090.20

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Solution

The fourth proportional to 918,177.40, 1,377,266.10 and 287,090.20 is: 430,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,177.40 : 1,377,266.10 = 287,090.20 : x
  2. Step 2: Convert to fraction form
    918,177.40/1,377,266.10 = 287,090.20/x
  3. Step 3: Cross multiply
    918,177.40x = 1,377,266.10 × 287,090.20
  4. Step 4: Simplify right side
    918,177.40x = 395,399,600,102.22
  5. Step 5: Solve for x
    x = 395,399,600,102.22/918,177.40
  6. Step 6: Final answer
    x = 430,635.30

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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.