Home / 871,822.20-1,203,150.06-489,847.80

Finding the Fourth Proportional to 871,822.20, 1,203,150.06 and 489,847.80

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Solution

The fourth proportional to 871,822.20, 1,203,150.06 and 489,847.80 is: 676,009.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,822.20 : 1,203,150.06 = 489,847.80 : x
  2. Step 2: Convert to fraction form
    871,822.20/1,203,150.06 = 489,847.80/x
  3. Step 3: Cross multiply
    871,822.20x = 1,203,150.06 × 489,847.80
  4. Step 4: Simplify right side
    871,822.20x = 589,360,409,960.87
  5. Step 5: Solve for x
    x = 589,360,409,960.87/871,822.20
  6. Step 6: Final answer
    x = 676,009.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.