Home / 814,639.12-1,220,512.92-340,280.56

Finding the Fourth Proportional to 814,639.12, 1,220,512.92 and 340,280.56

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Solution

The fourth proportional to 814,639.12, 1,220,512.92 and 340,280.56 is: 509,816.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,639.12 : 1,220,512.92 = 340,280.56 : x
  2. Step 2: Convert to fraction form
    814,639.12/1,220,512.92 = 340,280.56/x
  3. Step 3: Cross multiply
    814,639.12x = 1,220,512.92 × 340,280.56
  4. Step 4: Simplify right side
    814,639.12x = 415,316,819,904.84
  5. Step 5: Solve for x
    x = 415,316,819,904.84/814,639.12
  6. Step 6: Final answer
    x = 509,816.94

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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.