Home / 765,588.09-1,149,180.17-339,423.20

Finding the Fourth Proportional to 765,588.09, 1,149,180.17 and 339,423.20

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Solution

The fourth proportional to 765,588.09, 1,149,180.17 and 339,423.20 is: 509,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,588.09 : 1,149,180.17 = 339,423.20 : x
  2. Step 2: Convert to fraction form
    765,588.09/1,149,180.17 = 339,423.20/x
  3. Step 3: Cross multiply
    765,588.09x = 1,149,180.17 × 339,423.20
  4. Step 4: Simplify right side
    765,588.09x = 390,058,404,932.04
  5. Step 5: Solve for x
    x = 390,058,404,932.04/765,588.09
  6. Step 6: Final answer
    x = 509,488.60

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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.