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Finding the Fourth Proportional to 831,458.40, 1,245,344.40 and 332,565.60

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Solution

The fourth proportional to 831,458.40, 1,245,344.40 and 332,565.60 is: 498,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,458.40 : 1,245,344.40 = 332,565.60 : x
  2. Step 2: Convert to fraction form
    831,458.40/1,245,344.40 = 332,565.60/x
  3. Step 3: Cross multiply
    831,458.40x = 1,245,344.40 × 332,565.60
  4. Step 4: Simplify right side
    831,458.40x = 414,158,707,592.64
  5. Step 5: Solve for x
    x = 414,158,707,592.64/831,458.40
  6. Step 6: Final answer
    x = 498,111.16

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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.