Home / 814,280.70-1,220,837.85-340,722.30

Finding the Fourth Proportional to 814,280.70, 1,220,837.85 and 340,722.30

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Solution

The fourth proportional to 814,280.70, 1,220,837.85 and 340,722.30 is: 510,839.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,280.70 : 1,220,837.85 = 340,722.30 : x
  2. Step 2: Convert to fraction form
    814,280.70/1,220,837.85 = 340,722.30/x
  3. Step 3: Cross multiply
    814,280.70x = 1,220,837.85 × 340,722.30
  4. Step 4: Simplify right side
    814,280.70x = 415,966,680,179.06
  5. Step 5: Solve for x
    x = 415,966,680,179.06/814,280.70
  6. Step 6: Final answer
    x = 510,839.42

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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.