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Finding the Fourth Proportional to 461,750.60, 691,969.80 and 321,345.20

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Solution

The fourth proportional to 461,750.60, 691,969.80 and 321,345.20 is: 481,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,750.60 : 691,969.80 = 321,345.20 : x
  2. Step 2: Convert to fraction form
    461,750.60/691,969.80 = 321,345.20/x
  3. Step 3: Cross multiply
    461,750.60x = 691,969.80 × 321,345.20
  4. Step 4: Simplify right side
    461,750.60x = 222,361,173,774.96
  5. Step 5: Solve for x
    x = 222,361,173,774.96/461,750.60
  6. Step 6: Final answer
    x = 481,561.20

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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.