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Finding the Fourth Proportional to 480,505.57, 720,765.34 and 125,519.63

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Solution

The fourth proportional to 480,505.57, 720,765.34 and 125,519.63 is: 188,281.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,505.57 : 720,765.34 = 125,519.63 : x
  2. Step 2: Convert to fraction form
    480,505.57/720,765.34 = 125,519.63/x
  3. Step 3: Cross multiply
    480,505.57x = 720,765.34 × 125,519.63
  4. Step 4: Simplify right side
    480,505.57x = 90,470,194,876.00
  5. Step 5: Solve for x
    x = 90,470,194,876.00/480,505.57
  6. Step 6: Final answer
    x = 188,281.26

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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.