Home / 918,177.90-1,377,266.85-287,090.70

Finding the Fourth Proportional to 918,177.90, 1,377,266.85 and 287,090.70

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Solution

The fourth proportional to 918,177.90, 1,377,266.85 and 287,090.70 is: 430,636.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,177.90 : 1,377,266.85 = 287,090.70 : x
  2. Step 2: Convert to fraction form
    918,177.90/1,377,266.85 = 287,090.70/x
  3. Step 3: Cross multiply
    918,177.90x = 1,377,266.85 × 287,090.70
  4. Step 4: Simplify right side
    918,177.90x = 395,400,504,053.30
  5. Step 5: Solve for x
    x = 395,400,504,053.30/918,177.90
  6. Step 6: Final answer
    x = 430,636.05

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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.