Home / 871,428.80-1,306,171.20-338,772.80

Finding the Fourth Proportional to 871,428.80, 1,306,171.20 and 338,772.80

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Solution

The fourth proportional to 871,428.80, 1,306,171.20 and 338,772.80 is: 507,781.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,428.80 : 1,306,171.20 = 338,772.80 : x
  2. Step 2: Convert to fraction form
    871,428.80/1,306,171.20 = 338,772.80/x
  3. Step 3: Cross multiply
    871,428.80x = 1,306,171.20 × 338,772.80
  4. Step 4: Simplify right side
    871,428.80x = 442,495,274,703.36
  5. Step 5: Solve for x
    x = 442,495,274,703.36/871,428.80
  6. Step 6: Final answer
    x = 507,781.33

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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.