Home / 812,622.27-1,219,273.61-356,978.49

Finding the Fourth Proportional to 812,622.27, 1,219,273.61 and 356,978.49

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Solution

The fourth proportional to 812,622.27, 1,219,273.61 and 356,978.49 is: 535,617.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,622.27 : 1,219,273.61 = 356,978.49 : x
  2. Step 2: Convert to fraction form
    812,622.27/1,219,273.61 = 356,978.49/x
  3. Step 3: Cross multiply
    812,622.27x = 1,219,273.61 × 356,978.49
  4. Step 4: Simplify right side
    812,622.27x = 435,254,454,703.90
  5. Step 5: Solve for x
    x = 435,254,454,703.90/812,622.27
  6. Step 6: Final answer
    x = 535,617.18

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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.