Home / 667,564.80-1,001,347.20-489,105.60

Finding the Fourth Proportional to 667,564.80, 1,001,347.20 and 489,105.60

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Solution

The fourth proportional to 667,564.80, 1,001,347.20 and 489,105.60 is: 733,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,564.80 : 1,001,347.20 = 489,105.60 : x
  2. Step 2: Convert to fraction form
    667,564.80/1,001,347.20 = 489,105.60/x
  3. Step 3: Cross multiply
    667,564.80x = 1,001,347.20 × 489,105.60
  4. Step 4: Simplify right side
    667,564.80x = 489,764,523,064.32
  5. Step 5: Solve for x
    x = 489,764,523,064.32/667,564.80
  6. Step 6: Final answer
    x = 733,658.40

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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.