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Finding the Fourth Proportional to 492,880.68, 679,862.16 and 323,125.74

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Solution

The fourth proportional to 492,880.68, 679,862.16 and 323,125.74 is: 445,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,880.68 : 679,862.16 = 323,125.74 : x
  2. Step 2: Convert to fraction form
    492,880.68/679,862.16 = 323,125.74/x
  3. Step 3: Cross multiply
    492,880.68x = 679,862.16 × 323,125.74
  4. Step 4: Simplify right side
    492,880.68x = 219,680,963,548.00
  5. Step 5: Solve for x
    x = 219,680,963,548.00/492,880.68
  6. Step 6: Final answer
    x = 445,708.21

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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.