Home / 578,414.20-867,102.90-515,428.60

Finding the Fourth Proportional to 578,414.20, 867,102.90 and 515,428.60

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Solution

The fourth proportional to 578,414.20, 867,102.90 and 515,428.60 is: 772,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,414.20 : 867,102.90 = 515,428.60 : x
  2. Step 2: Convert to fraction form
    578,414.20/867,102.90 = 515,428.60/x
  3. Step 3: Cross multiply
    578,414.20x = 867,102.90 × 515,428.60
  4. Step 4: Simplify right side
    578,414.20x = 446,929,633,802.94
  5. Step 5: Solve for x
    x = 446,929,633,802.94/578,414.20
  6. Step 6: Final answer
    x = 772,680.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.