Home / 871,688.08-1,202,864.88-489,778.48

Finding the Fourth Proportional to 871,688.08, 1,202,864.88 and 489,778.48

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Solution

The fourth proportional to 871,688.08, 1,202,864.88 and 489,778.48 is: 675,857.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,688.08 : 1,202,864.88 = 489,778.48 : x
  2. Step 2: Convert to fraction form
    871,688.08/1,202,864.88 = 489,778.48/x
  3. Step 3: Cross multiply
    871,688.08x = 1,202,864.88 × 489,778.48
  4. Step 4: Simplify right side
    871,688.08x = 589,137,332,571.78
  5. Step 5: Solve for x
    x = 589,137,332,571.78/871,688.08
  6. Step 6: Final answer
    x = 675,857.97

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1.5x scale

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.