Home / 820,177.20-1,230,265.80-459,978.30

Finding the Fourth Proportional to 820,177.20, 1,230,265.80 and 459,978.30

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Solution

The fourth proportional to 820,177.20, 1,230,265.80 and 459,978.30 is: 689,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,177.20 : 1,230,265.80 = 459,978.30 : x
  2. Step 2: Convert to fraction form
    820,177.20/1,230,265.80 = 459,978.30/x
  3. Step 3: Cross multiply
    820,177.20x = 1,230,265.80 × 459,978.30
  4. Step 4: Simplify right side
    820,177.20x = 565,895,571,232.14
  5. Step 5: Solve for x
    x = 565,895,571,232.14/820,177.20
  6. Step 6: Final answer
    x = 689,967.45

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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.