Home / 545,059.40-817,589.10-426,831.80

Finding the Fourth Proportional to 545,059.40, 817,589.10 and 426,831.80

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Solution

The fourth proportional to 545,059.40, 817,589.10 and 426,831.80 is: 640,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,059.40 : 817,589.10 = 426,831.80 : x
  2. Step 2: Convert to fraction form
    545,059.40/817,589.10 = 426,831.80/x
  3. Step 3: Cross multiply
    545,059.40x = 817,589.10 × 426,831.80
  4. Step 4: Simplify right side
    545,059.40x = 348,973,027,213.38
  5. Step 5: Solve for x
    x = 348,973,027,213.38/545,059.40
  6. Step 6: Final answer
    x = 640,247.70

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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.