Home / 480,665.12-721,038.82-125,678.56

Finding the Fourth Proportional to 480,665.12, 721,038.82 and 125,678.56

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Solution

The fourth proportional to 480,665.12, 721,038.82 and 125,678.56 is: 188,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,665.12 : 721,038.82 = 125,678.56 : x
  2. Step 2: Convert to fraction form
    480,665.12/721,038.82 = 125,678.56/x
  3. Step 3: Cross multiply
    480,665.12x = 721,038.82 × 125,678.56
  4. Step 4: Simplify right side
    480,665.12x = 90,619,120,601.70
  5. Step 5: Solve for x
    x = 90,619,120,601.70/480,665.12
  6. Step 6: Final answer
    x = 188,528.60

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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.