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Finding the Fourth Proportional to 502,892, 754,383.36 and 128,918.24

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Solution

The fourth proportional to 502,892, 754,383.36 and 128,918.24 is: 193,388.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,892 : 754,383.36 = 128,918.24 : x
  2. Step 2: Convert to fraction form
    502,892/754,383.36 = 128,918.24/x
  3. Step 3: Cross multiply
    502,892x = 754,383.36 × 128,918.24
  4. Step 4: Simplify right side
    502,892x = 97,253,775,056.49
  5. Step 5: Solve for x
    x = 97,253,775,056.49/502,892
  6. Step 6: Final answer
    x = 193,388.99

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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.