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Finding the Fourth Proportional to 561,119.70, 841,679.55 and 280,535.70

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Solution

The fourth proportional to 561,119.70, 841,679.55 and 280,535.70 is: 420,803.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,119.70 : 841,679.55 = 280,535.70 : x
  2. Step 2: Convert to fraction form
    561,119.70/841,679.55 = 280,535.70/x
  3. Step 3: Cross multiply
    561,119.70x = 841,679.55 × 280,535.70
  4. Step 4: Simplify right side
    561,119.70x = 236,121,161,734.94
  5. Step 5: Solve for x
    x = 236,121,161,734.94/561,119.70
  6. Step 6: Final answer
    x = 420,803.55

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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.