Home / 545,831.70-818,747.55-280,111.20

Finding the Fourth Proportional to 545,831.70, 818,747.55 and 280,111.20

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Solution

The fourth proportional to 545,831.70, 818,747.55 and 280,111.20 is: 420,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,831.70 : 818,747.55 = 280,111.20 : x
  2. Step 2: Convert to fraction form
    545,831.70/818,747.55 = 280,111.20/x
  3. Step 3: Cross multiply
    545,831.70x = 818,747.55 × 280,111.20
  4. Step 4: Simplify right side
    545,831.70x = 229,340,358,727.56
  5. Step 5: Solve for x
    x = 229,340,358,727.56/545,831.70
  6. Step 6: Final answer
    x = 420,166.80

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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.