Home / 814,248.20-1,221,809.70-340,981.40

Finding the Fourth Proportional to 814,248.20, 1,221,809.70 and 340,981.40

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Solution

The fourth proportional to 814,248.20, 1,221,809.70 and 340,981.40 is: 511,655.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,248.20 : 1,221,809.70 = 340,981.40 : x
  2. Step 2: Convert to fraction form
    814,248.20/1,221,809.70 = 340,981.40/x
  3. Step 3: Cross multiply
    814,248.20x = 1,221,809.70 × 340,981.40
  4. Step 4: Simplify right side
    814,248.20x = 416,614,382,039.58
  5. Step 5: Solve for x
    x = 416,614,382,039.58/814,248.20
  6. Step 6: Final answer
    x = 511,655.27

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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.