Home / 820,291.20-1,230,436.80-503,721.60

Finding the Fourth Proportional to 820,291.20, 1,230,436.80 and 503,721.60

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Solution

The fourth proportional to 820,291.20, 1,230,436.80 and 503,721.60 is: 755,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,291.20 : 1,230,436.80 = 503,721.60 : x
  2. Step 2: Convert to fraction form
    820,291.20/1,230,436.80 = 503,721.60/x
  3. Step 3: Cross multiply
    820,291.20x = 1,230,436.80 × 503,721.60
  4. Step 4: Simplify right side
    820,291.20x = 619,797,593,594.88
  5. Step 5: Solve for x
    x = 619,797,593,594.88/820,291.20
  6. Step 6: Final answer
    x = 755,582.40

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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.