Home / 1,112,520.80-1,668,052.20-438,195.80

Finding the Fourth Proportional to 1,112,520.80, 1,668,052.20 and 438,195.80

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Solution

The fourth proportional to 1,112,520.80, 1,668,052.20 and 438,195.80 is: 657,006.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,520.80 : 1,668,052.20 = 438,195.80 : x
  2. Step 2: Convert to fraction form
    1,112,520.80/1,668,052.20 = 438,195.80/x
  3. Step 3: Cross multiply
    1,112,520.80x = 1,668,052.20 × 438,195.80
  4. Step 4: Simplify right side
    1,112,520.80x = 730,933,468,220.76
  5. Step 5: Solve for x
    x = 730,933,468,220.76/1,112,520.80
  6. Step 6: Final answer
    x = 657,006.56

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Double scale
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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.