Home / 480,936.80-721,405.20-125,986.70

Finding the Fourth Proportional to 480,936.80, 721,405.20 and 125,986.70

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Solution

The fourth proportional to 480,936.80, 721,405.20 and 125,986.70 is: 188,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,936.80 : 721,405.20 = 125,986.70 : x
  2. Step 2: Convert to fraction form
    480,936.80/721,405.20 = 125,986.70/x
  3. Step 3: Cross multiply
    480,936.80x = 721,405.20 × 125,986.70
  4. Step 4: Simplify right side
    480,936.80x = 90,887,460,510.84
  5. Step 5: Solve for x
    x = 90,887,460,510.84/480,936.80
  6. Step 6: Final answer
    x = 188,980.05

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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.