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Finding the Fourth Proportional to 636,915.02, 878,963.76 and 365,035.05

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Solution

The fourth proportional to 636,915.02, 878,963.76 and 365,035.05 is: 503,760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,915.02 : 878,963.76 = 365,035.05 : x
  2. Step 2: Convert to fraction form
    636,915.02/878,963.76 = 365,035.05/x
  3. Step 3: Cross multiply
    636,915.02x = 878,963.76 × 365,035.05
  4. Step 4: Simplify right side
    636,915.02x = 320,852,580,079.79
  5. Step 5: Solve for x
    x = 320,852,580,079.79/636,915.02
  6. Step 6: Final answer
    x = 503,760.43

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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.