Home / 871,315.20-1,307,037.60-310,276.80

Finding the Fourth Proportional to 871,315.20, 1,307,037.60 and 310,276.80

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Solution

The fourth proportional to 871,315.20, 1,307,037.60 and 310,276.80 is: 465,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,315.20 : 1,307,037.60 = 310,276.80 : x
  2. Step 2: Convert to fraction form
    871,315.20/1,307,037.60 = 310,276.80/x
  3. Step 3: Cross multiply
    871,315.20x = 1,307,037.60 × 310,276.80
  4. Step 4: Simplify right side
    871,315.20x = 405,543,444,007.68
  5. Step 5: Solve for x
    x = 405,543,444,007.68/871,315.20
  6. Step 6: Final answer
    x = 465,438.28

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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.