Home / 1,279,288.80-1,918,414.80-437,407.20

Finding the Fourth Proportional to 1,279,288.80, 1,918,414.80 and 437,407.20

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Solution

The fourth proportional to 1,279,288.80, 1,918,414.80 and 437,407.20 is: 655,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,288.80 : 1,918,414.80 = 437,407.20 : x
  2. Step 2: Convert to fraction form
    1,279,288.80/1,918,414.80 = 437,407.20/x
  3. Step 3: Cross multiply
    1,279,288.80x = 1,918,414.80 × 437,407.20
  4. Step 4: Simplify right side
    1,279,288.80x = 839,128,446,106.56
  5. Step 5: Solve for x
    x = 839,128,446,106.56/1,279,288.80
  6. Step 6: Final answer
    x = 655,933.55

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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.