Home / 1,247,428.20-1,871,142.30-1,152,949.80

Finding the Fourth Proportional to 1,247,428.20, 1,871,142.30 and 1,152,949.80

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Solution

The fourth proportional to 1,247,428.20, 1,871,142.30 and 1,152,949.80 is: 1,729,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,428.20 : 1,871,142.30 = 1,152,949.80 : x
  2. Step 2: Convert to fraction form
    1,247,428.20/1,871,142.30 = 1,152,949.80/x
  3. Step 3: Cross multiply
    1,247,428.20x = 1,871,142.30 × 1,152,949.80
  4. Step 4: Simplify right side
    1,247,428.20x = 2,157,333,140,556.54
  5. Step 5: Solve for x
    x = 2,157,333,140,556.54/1,247,428.20
  6. Step 6: Final answer
    x = 1,729,424.70

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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.