Home / 1,915,378.80-2,871,610.20-969,428.40

Finding the Fourth Proportional to 1,915,378.80, 2,871,610.20 and 969,428.40

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Solution

The fourth proportional to 1,915,378.80, 2,871,610.20 and 969,428.40 is: 1,453,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,378.80 : 2,871,610.20 = 969,428.40 : x
  2. Step 2: Convert to fraction form
    1,915,378.80/2,871,610.20 = 969,428.40/x
  3. Step 3: Cross multiply
    1,915,378.80x = 2,871,610.20 × 969,428.40
  4. Step 4: Simplify right side
    1,915,378.80x = 2,783,820,481,609.68
  5. Step 5: Solve for x
    x = 2,783,820,481,609.68/1,915,378.80
  6. Step 6: Final answer
    x = 1,453,404.66

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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.