Home / 480,651.75-721,018.53-125,665.20

Finding the Fourth Proportional to 480,651.75, 721,018.53 and 125,665.20

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Solution

The fourth proportional to 480,651.75, 721,018.53 and 125,665.20 is: 188,508.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,651.75 : 721,018.53 = 125,665.20 : x
  2. Step 2: Convert to fraction form
    480,651.75/721,018.53 = 125,665.20/x
  3. Step 3: Cross multiply
    480,651.75x = 721,018.53 × 125,665.20
  4. Step 4: Simplify right side
    480,651.75x = 90,606,937,776.16
  5. Step 5: Solve for x
    x = 90,606,937,776.16/480,651.75
  6. Step 6: Final answer
    x = 188,508.49

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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.