Home / 1,279,124.80-1,918,168.80-437,243.20

Finding the Fourth Proportional to 1,279,124.80, 1,918,168.80 and 437,243.20

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Solution

The fourth proportional to 1,279,124.80, 1,918,168.80 and 437,243.20 is: 655,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,124.80 : 1,918,168.80 = 437,243.20 : x
  2. Step 2: Convert to fraction form
    1,279,124.80/1,918,168.80 = 437,243.20/x
  3. Step 3: Cross multiply
    1,279,124.80x = 1,918,168.80 × 437,243.20
  4. Step 4: Simplify right side
    1,279,124.80x = 838,706,264,252.16
  5. Step 5: Solve for x
    x = 838,706,264,252.16/1,279,124.80
  6. Step 6: Final answer
    x = 655,687.60

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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.