Home / 812,099.50-1,120,681.08-449,523.28

Finding the Fourth Proportional to 812,099.50, 1,120,681.08 and 449,523.28

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Solution

The fourth proportional to 812,099.50, 1,120,681.08 and 449,523.28 is: 620,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,099.50 : 1,120,681.08 = 449,523.28 : x
  2. Step 2: Convert to fraction form
    812,099.50/1,120,681.08 = 449,523.28/x
  3. Step 3: Cross multiply
    812,099.50x = 1,120,681.08 × 449,523.28
  4. Step 4: Simplify right side
    812,099.50x = 503,772,234,915.54
  5. Step 5: Solve for x
    x = 503,772,234,915.54/812,099.50
  6. Step 6: Final answer
    x = 620,333.14

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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.