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Finding the Fourth Proportional to 551,246.60, 826,869.90 and 426,830.60

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Solution

The fourth proportional to 551,246.60, 826,869.90 and 426,830.60 is: 640,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,246.60 : 826,869.90 = 426,830.60 : x
  2. Step 2: Convert to fraction form
    551,246.60/826,869.90 = 426,830.60/x
  3. Step 3: Cross multiply
    551,246.60x = 826,869.90 × 426,830.60
  4. Step 4: Simplify right side
    551,246.60x = 352,933,375,538.94
  5. Step 5: Solve for x
    x = 352,933,375,538.94/551,246.60
  6. Step 6: Final answer
    x = 640,245.90

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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.