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Finding the Fourth Proportional to 571,998.75, 789,343.23 and 313,874.91

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Solution

The fourth proportional to 571,998.75, 789,343.23 and 313,874.91 is: 433,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,998.75 : 789,343.23 = 313,874.91 : x
  2. Step 2: Convert to fraction form
    571,998.75/789,343.23 = 313,874.91/x
  3. Step 3: Cross multiply
    571,998.75x = 789,343.23 × 313,874.91
  4. Step 4: Simplify right side
    571,998.75x = 247,755,035,275.36
  5. Step 5: Solve for x
    x = 247,755,035,275.36/571,998.75
  6. Step 6: Final answer
    x = 433,139.12

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Half scale
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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.