Home / 1,247,784.40-1,871,670.52-489,089.80

Finding the Fourth Proportional to 1,247,784.40, 1,871,670.52 and 489,089.80

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Solution

The fourth proportional to 1,247,784.40, 1,871,670.52 and 489,089.80 is: 733,632.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,784.40 : 1,871,670.52 = 489,089.80 : x
  2. Step 2: Convert to fraction form
    1,247,784.40/1,871,670.52 = 489,089.80/x
  3. Step 3: Cross multiply
    1,247,784.40x = 1,871,670.52 × 489,089.80
  4. Step 4: Simplify right side
    1,247,784.40x = 915,414,960,292.70
  5. Step 5: Solve for x
    x = 915,414,960,292.70/1,247,784.40
  6. Step 6: Final answer
    x = 733,632.32

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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.