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Finding the Fourth Proportional to 558,420.60, 836,642.70 and 539,920.20

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Solution

The fourth proportional to 558,420.60, 836,642.70 and 539,920.20 is: 808,924.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,420.60 : 836,642.70 = 539,920.20 : x
  2. Step 2: Convert to fraction form
    558,420.60/836,642.70 = 539,920.20/x
  3. Step 3: Cross multiply
    558,420.60x = 836,642.70 × 539,920.20
  4. Step 4: Simplify right side
    558,420.60x = 451,720,293,912.54
  5. Step 5: Solve for x
    x = 451,720,293,912.54/558,420.60
  6. Step 6: Final answer
    x = 808,924.84

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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.