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Finding the Fourth Proportional to 552,078.40, 828,117.60 and 328,129.60

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Solution

The fourth proportional to 552,078.40, 828,117.60 and 328,129.60 is: 492,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,078.40 : 828,117.60 = 328,129.60 : x
  2. Step 2: Convert to fraction form
    552,078.40/828,117.60 = 328,129.60/x
  3. Step 3: Cross multiply
    552,078.40x = 828,117.60 × 328,129.60
  4. Step 4: Simplify right side
    552,078.40x = 271,729,896,840.96
  5. Step 5: Solve for x
    x = 271,729,896,840.96/552,078.40
  6. Step 6: Final answer
    x = 492,194.40

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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.