Home / 690,638.40-1,035,957.60-217,468.80

Finding the Fourth Proportional to 690,638.40, 1,035,957.60 and 217,468.80

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Solution

The fourth proportional to 690,638.40, 1,035,957.60 and 217,468.80 is: 326,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,638.40 : 1,035,957.60 = 217,468.80 : x
  2. Step 2: Convert to fraction form
    690,638.40/1,035,957.60 = 217,468.80/x
  3. Step 3: Cross multiply
    690,638.40x = 1,035,957.60 × 217,468.80
  4. Step 4: Simplify right side
    690,638.40x = 225,288,456,122.88
  5. Step 5: Solve for x
    x = 225,288,456,122.88/690,638.40
  6. Step 6: Final answer
    x = 326,203.20

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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.