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Finding the Fourth Proportional to 582,915.20, 804,425.92 and 328,270.72

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Solution

The fourth proportional to 582,915.20, 804,425.92 and 328,270.72 is: 453,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,915.20 : 804,425.92 = 328,270.72 : x
  2. Step 2: Convert to fraction form
    582,915.20/804,425.92 = 328,270.72/x
  3. Step 3: Cross multiply
    582,915.20x = 804,425.92 × 328,270.72
  4. Step 4: Simplify right side
    582,915.20x = 264,069,475,945.06
  5. Step 5: Solve for x
    x = 264,069,475,945.06/582,915.20
  6. Step 6: Final answer
    x = 453,015.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.