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Finding the Fourth Proportional to 657,489.70, 986,234.55 and 283,512.70

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Solution

The fourth proportional to 657,489.70, 986,234.55 and 283,512.70 is: 425,269.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,489.70 : 986,234.55 = 283,512.70 : x
  2. Step 2: Convert to fraction form
    657,489.70/986,234.55 = 283,512.70/x
  3. Step 3: Cross multiply
    657,489.70x = 986,234.55 × 283,512.70
  4. Step 4: Simplify right side
    657,489.70x = 279,610,020,103.79
  5. Step 5: Solve for x
    x = 279,610,020,103.79/657,489.70
  6. Step 6: Final answer
    x = 425,269.05

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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.