Home / 748,857.90-1,123,291.65-299,616.30

Finding the Fourth Proportional to 748,857.90, 1,123,291.65 and 299,616.30

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Solution

The fourth proportional to 748,857.90, 1,123,291.65 and 299,616.30 is: 449,426.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,857.90 : 1,123,291.65 = 299,616.30 : x
  2. Step 2: Convert to fraction form
    748,857.90/1,123,291.65 = 299,616.30/x
  3. Step 3: Cross multiply
    748,857.90x = 1,123,291.65 × 299,616.30
  4. Step 4: Simplify right side
    748,857.90x = 336,556,487,993.90
  5. Step 5: Solve for x
    x = 336,556,487,993.90/748,857.90
  6. Step 6: Final answer
    x = 449,426.37

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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.