Home / 1,209,036.80-1,813,117.80-489,076.40

Finding the Fourth Proportional to 1,209,036.80, 1,813,117.80 and 489,076.40

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Solution

The fourth proportional to 1,209,036.80, 1,813,117.80 and 489,076.40 is: 733,437.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,036.80 : 1,813,117.80 = 489,076.40 : x
  2. Step 2: Convert to fraction form
    1,209,036.80/1,813,117.80 = 489,076.40/x
  3. Step 3: Cross multiply
    1,209,036.80x = 1,813,117.80 × 489,076.40
  4. Step 4: Simplify right side
    1,209,036.80x = 886,753,126,399.92
  5. Step 5: Solve for x
    x = 886,753,126,399.92/1,209,036.80
  6. Step 6: Final answer
    x = 733,437.66

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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.