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Finding the Fourth Proportional to 480,647.62, 721,012.34 and 125,661.07

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Solution

The fourth proportional to 480,647.62, 721,012.34 and 125,661.07 is: 188,502.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,647.62 : 721,012.34 = 125,661.07 : x
  2. Step 2: Convert to fraction form
    480,647.62/721,012.34 = 125,661.07/x
  3. Step 3: Cross multiply
    480,647.62x = 721,012.34 × 125,661.07
  4. Step 4: Simplify right side
    480,647.62x = 90,603,182,127.60
  5. Step 5: Solve for x
    x = 90,603,182,127.60/480,647.62
  6. Step 6: Final answer
    x = 188,502.30

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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.