Home / 1,247,747.85-1,871,621.30-489,945.87

Finding the Fourth Proportional to 1,247,747.85, 1,871,621.30 and 489,945.87

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Solution

The fourth proportional to 1,247,747.85, 1,871,621.30 and 489,945.87 is: 734,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,747.85 : 1,871,621.30 = 489,945.87 : x
  2. Step 2: Convert to fraction form
    1,247,747.85/1,871,621.30 = 489,945.87/x
  3. Step 3: Cross multiply
    1,247,747.85x = 1,871,621.30 × 489,945.87
  4. Step 4: Simplify right side
    1,247,747.85x = 916,993,127,363.90
  5. Step 5: Solve for x
    x = 916,993,127,363.90/1,247,747.85
  6. Step 6: Final answer
    x = 734,918.62

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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.