Home / 814,252.20-1,221,815.70-340,985.40

Finding the Fourth Proportional to 814,252.20, 1,221,815.70 and 340,985.40

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Solution

The fourth proportional to 814,252.20, 1,221,815.70 and 340,985.40 is: 511,661.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,252.20 : 1,221,815.70 = 340,985.40 : x
  2. Step 2: Convert to fraction form
    814,252.20/1,221,815.70 = 340,985.40/x
  3. Step 3: Cross multiply
    814,252.20x = 1,221,815.70 × 340,985.40
  4. Step 4: Simplify right side
    814,252.20x = 416,621,315,190.78
  5. Step 5: Solve for x
    x = 416,621,315,190.78/814,252.20
  6. Step 6: Final answer
    x = 511,661.27

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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.