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Finding the Fourth Proportional to 689,100.75, 950,959.04 and 387,294.75

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Solution

The fourth proportional to 689,100.75, 950,959.04 and 387,294.75 is: 534,466.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,100.75 : 950,959.04 = 387,294.75 : x
  2. Step 2: Convert to fraction form
    689,100.75/950,959.04 = 387,294.75/x
  3. Step 3: Cross multiply
    689,100.75x = 950,959.04 × 387,294.75
  4. Step 4: Simplify right side
    689,100.75x = 368,301,441,720.57
  5. Step 5: Solve for x
    x = 368,301,441,720.57/689,100.75
  6. Step 6: Final answer
    x = 534,466.76

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.