Home / 812,820.48-1,218,785.28-251,699.20

Finding the Fourth Proportional to 812,820.48, 1,218,785.28 and 251,699.20

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Solution

The fourth proportional to 812,820.48, 1,218,785.28 and 251,699.20 is: 377,410.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,820.48 : 1,218,785.28 = 251,699.20 : x
  2. Step 2: Convert to fraction form
    812,820.48/1,218,785.28 = 251,699.20/x
  3. Step 3: Cross multiply
    812,820.48x = 1,218,785.28 × 251,699.20
  4. Step 4: Simplify right side
    812,820.48x = 306,767,279,947.78
  5. Step 5: Solve for x
    x = 306,767,279,947.78/812,820.48
  6. Step 6: Final answer
    x = 377,410.86

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1.5x scale

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.