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Finding the Fourth Proportional to 551,144.40, 825,550.20 and 432,171.60

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Solution

The fourth proportional to 551,144.40, 825,550.20 and 432,171.60 is: 647,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,144.40 : 825,550.20 = 432,171.60 : x
  2. Step 2: Convert to fraction form
    551,144.40/825,550.20 = 432,171.60/x
  3. Step 3: Cross multiply
    551,144.40x = 825,550.20 × 432,171.60
  4. Step 4: Simplify right side
    551,144.40x = 356,779,350,814.32
  5. Step 5: Solve for x
    x = 356,779,350,814.32/551,144.40
  6. Step 6: Final answer
    x = 647,342.78

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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.