Home / 1,059,145.20-1,589,106.60-428,122.80

Finding the Fourth Proportional to 1,059,145.20, 1,589,106.60 and 428,122.80

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Solution

The fourth proportional to 1,059,145.20, 1,589,106.60 and 428,122.80 is: 642,341.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059,145.20 : 1,589,106.60 = 428,122.80 : x
  2. Step 2: Convert to fraction form
    1,059,145.20/1,589,106.60 = 428,122.80/x
  3. Step 3: Cross multiply
    1,059,145.20x = 1,589,106.60 × 428,122.80
  4. Step 4: Simplify right side
    1,059,145.20x = 680,332,767,090.48
  5. Step 5: Solve for x
    x = 680,332,767,090.48/1,059,145.20
  6. Step 6: Final answer
    x = 642,341.36

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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.