Home / 814,226.95-1,219,409.78-645,203.78

Finding the Fourth Proportional to 814,226.95, 1,219,409.78 and 645,203.78

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Solution

The fourth proportional to 814,226.95, 1,219,409.78 and 645,203.78 is: 966,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,226.95 : 1,219,409.78 = 645,203.78 : x
  2. Step 2: Convert to fraction form
    814,226.95/1,219,409.78 = 645,203.78/x
  3. Step 3: Cross multiply
    814,226.95x = 1,219,409.78 × 645,203.78
  4. Step 4: Simplify right side
    814,226.95x = 786,767,793,327.92
  5. Step 5: Solve for x
    x = 786,767,793,327.92/814,226.95
  6. Step 6: Final answer
    x = 966,275.80

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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.