Home / 1,279,285.80-1,918,410.30-437,404.20

Finding the Fourth Proportional to 1,279,285.80, 1,918,410.30 and 437,404.20

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Solution

The fourth proportional to 1,279,285.80, 1,918,410.30 and 437,404.20 is: 655,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,285.80 : 1,918,410.30 = 437,404.20 : x
  2. Step 2: Convert to fraction form
    1,279,285.80/1,918,410.30 = 437,404.20/x
  3. Step 3: Cross multiply
    1,279,285.80x = 1,918,410.30 × 437,404.20
  4. Step 4: Simplify right side
    1,279,285.80x = 839,120,722,543.26
  5. Step 5: Solve for x
    x = 839,120,722,543.26/1,279,285.80
  6. Step 6: Final answer
    x = 655,929.05

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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.