Home / 1,386,648.40-2,079,972.60-489,103.60

Finding the Fourth Proportional to 1,386,648.40, 2,079,972.60 and 489,103.60

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Solution

The fourth proportional to 1,386,648.40, 2,079,972.60 and 489,103.60 is: 733,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,648.40 : 2,079,972.60 = 489,103.60 : x
  2. Step 2: Convert to fraction form
    1,386,648.40/2,079,972.60 = 489,103.60/x
  3. Step 3: Cross multiply
    1,386,648.40x = 2,079,972.60 × 489,103.60
  4. Step 4: Simplify right side
    1,386,648.40x = 1,017,322,086,561.36
  5. Step 5: Solve for x
    x = 1,017,322,086,561.36/1,386,648.40
  6. Step 6: Final answer
    x = 733,655.40

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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.