Home / 1,279,128.80-1,918,174.80-437,247.20

Finding the Fourth Proportional to 1,279,128.80, 1,918,174.80 and 437,247.20

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Solution

The fourth proportional to 1,279,128.80, 1,918,174.80 and 437,247.20 is: 655,693.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,128.80 : 1,918,174.80 = 437,247.20 : x
  2. Step 2: Convert to fraction form
    1,279,128.80/1,918,174.80 = 437,247.20/x
  3. Step 3: Cross multiply
    1,279,128.80x = 1,918,174.80 × 437,247.20
  4. Step 4: Simplify right side
    1,279,128.80x = 838,716,560,410.56
  5. Step 5: Solve for x
    x = 838,716,560,410.56/1,279,128.80
  6. Step 6: Final answer
    x = 655,693.59

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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.