Home / 1,279,139.80-1,918,191.30-437,258.20

Finding the Fourth Proportional to 1,279,139.80, 1,918,191.30 and 437,258.20

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Solution

The fourth proportional to 1,279,139.80, 1,918,191.30 and 437,258.20 is: 655,710.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,139.80 : 1,918,191.30 = 437,258.20 : x
  2. Step 2: Convert to fraction form
    1,279,139.80/1,918,191.30 = 437,258.20/x
  3. Step 3: Cross multiply
    1,279,139.80x = 1,918,191.30 × 437,258.20
  4. Step 4: Simplify right side
    1,279,139.80x = 838,744,875,093.66
  5. Step 5: Solve for x
    x = 838,744,875,093.66/1,279,139.80
  6. Step 6: Final answer
    x = 655,710.09

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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.