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Finding the Fourth Proportional to 480,647.75, 721,012.52 and 125,661.20

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Solution

The fourth proportional to 480,647.75, 721,012.52 and 125,661.20 is: 188,502.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,647.75 : 721,012.52 = 125,661.20 : x
  2. Step 2: Convert to fraction form
    480,647.75/721,012.52 = 125,661.20/x
  3. Step 3: Cross multiply
    480,647.75x = 721,012.52 × 125,661.20
  4. Step 4: Simplify right side
    480,647.75x = 90,603,295,187.31
  5. Step 5: Solve for x
    x = 90,603,295,187.31/480,647.75
  6. Step 6: Final answer
    x = 188,502.49

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1.5x scale

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.