Home / 864,135.60-1,294,453.80-489,721.20

Finding the Fourth Proportional to 864,135.60, 1,294,453.80 and 489,721.20

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Solution

The fourth proportional to 864,135.60, 1,294,453.80 and 489,721.20 is: 733,590.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,135.60 : 1,294,453.80 = 489,721.20 : x
  2. Step 2: Convert to fraction form
    864,135.60/1,294,453.80 = 489,721.20/x
  3. Step 3: Cross multiply
    864,135.60x = 1,294,453.80 × 489,721.20
  4. Step 4: Simplify right side
    864,135.60x = 633,921,468,280.56
  5. Step 5: Solve for x
    x = 633,921,468,280.56/864,135.60
  6. Step 6: Final answer
    x = 733,590.27

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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.