Home / 1,279,461.87-1,918,551.04-426,233.53

Finding the Fourth Proportional to 1,279,461.87, 1,918,551.04 and 426,233.53

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Solution

The fourth proportional to 1,279,461.87, 1,918,551.04 and 426,233.53 is: 639,136.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,461.87 : 1,918,551.04 = 426,233.53 : x
  2. Step 2: Convert to fraction form
    1,279,461.87/1,918,551.04 = 426,233.53/x
  3. Step 3: Cross multiply
    1,279,461.87x = 1,918,551.04 × 426,233.53
  4. Step 4: Simplify right side
    1,279,461.87x = 817,750,790,191.68
  5. Step 5: Solve for x
    x = 817,750,790,191.68/1,279,461.87
  6. Step 6: Final answer
    x = 639,136.51

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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.