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Finding the Fourth Proportional to 551,276.60, 826,914.90 and 426,860.60

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Solution

The fourth proportional to 551,276.60, 826,914.90 and 426,860.60 is: 640,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,276.60 : 826,914.90 = 426,860.60 : x
  2. Step 2: Convert to fraction form
    551,276.60/826,914.90 = 426,860.60/x
  3. Step 3: Cross multiply
    551,276.60x = 826,914.90 × 426,860.60
  4. Step 4: Simplify right side
    551,276.60x = 352,977,390,362.94
  5. Step 5: Solve for x
    x = 352,977,390,362.94/551,276.60
  6. Step 6: Final answer
    x = 640,290.90

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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.