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Finding the Fourth Proportional to 888,129.80, 1,330,663.80 and 413,842.40

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Solution

The fourth proportional to 888,129.80, 1,330,663.80 and 413,842.40 is: 620,050.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,129.80 : 1,330,663.80 = 413,842.40 : x
  2. Step 2: Convert to fraction form
    888,129.80/1,330,663.80 = 413,842.40/x
  3. Step 3: Cross multiply
    888,129.80x = 1,330,663.80 × 413,842.40
  4. Step 4: Simplify right side
    888,129.80x = 550,685,100,585.12
  5. Step 5: Solve for x
    x = 550,685,100,585.12/888,129.80
  6. Step 6: Final answer
    x = 620,050.25

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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.