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Finding the Fourth Proportional to 685,414.80, 1,028,008.80 and 230,000.40

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Solution

The fourth proportional to 685,414.80, 1,028,008.80 and 230,000.40 is: 344,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,414.80 : 1,028,008.80 = 230,000.40 : x
  2. Step 2: Convert to fraction form
    685,414.80/1,028,008.80 = 230,000.40/x
  3. Step 3: Cross multiply
    685,414.80x = 1,028,008.80 × 230,000.40
  4. Step 4: Simplify right side
    685,414.80x = 236,442,435,203.52
  5. Step 5: Solve for x
    x = 236,442,435,203.52/685,414.80
  6. Step 6: Final answer
    x = 344,962.55

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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.