Home / 482,979.80-724,437.30-127,986.20

Finding the Fourth Proportional to 482,979.80, 724,437.30 and 127,986.20

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Solution

The fourth proportional to 482,979.80, 724,437.30 and 127,986.20 is: 191,970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,979.80 : 724,437.30 = 127,986.20 : x
  2. Step 2: Convert to fraction form
    482,979.80/724,437.30 = 127,986.20/x
  3. Step 3: Cross multiply
    482,979.80x = 724,437.30 × 127,986.20
  4. Step 4: Simplify right side
    482,979.80x = 92,717,977,165.26
  5. Step 5: Solve for x
    x = 92,717,977,165.26/482,979.80
  6. Step 6: Final answer
    x = 191,970.71

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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.