Home / 545,948.70-818,923.05-280,228.20

Finding the Fourth Proportional to 545,948.70, 818,923.05 and 280,228.20

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Solution

The fourth proportional to 545,948.70, 818,923.05 and 280,228.20 is: 420,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,948.70 : 818,923.05 = 280,228.20 : x
  2. Step 2: Convert to fraction form
    545,948.70/818,923.05 = 280,228.20/x
  3. Step 3: Cross multiply
    545,948.70x = 818,923.05 × 280,228.20
  4. Step 4: Simplify right side
    545,948.70x = 229,485,332,240.01
  5. Step 5: Solve for x
    x = 229,485,332,240.01/545,948.70
  6. Step 6: Final answer
    x = 420,342.30

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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.