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Finding the Fourth Proportional to 649,915.76, 896,866.96 and 359,519.75

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Solution

The fourth proportional to 649,915.76, 896,866.96 and 359,519.75 is: 496,127.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,915.76 : 896,866.96 = 359,519.75 : x
  2. Step 2: Convert to fraction form
    649,915.76/896,866.96 = 359,519.75/x
  3. Step 3: Cross multiply
    649,915.76x = 896,866.96 × 359,519.75
  4. Step 4: Simplify right side
    649,915.76x = 322,441,385,242.46
  5. Step 5: Solve for x
    x = 322,441,385,242.46/649,915.76
  6. Step 6: Final answer
    x = 496,127.97

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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.