Home / 871,300.20-1,307,015.10-310,261.80

Finding the Fourth Proportional to 871,300.20, 1,307,015.10 and 310,261.80

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Solution

The fourth proportional to 871,300.20, 1,307,015.10 and 310,261.80 is: 465,415.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,300.20 : 1,307,015.10 = 310,261.80 : x
  2. Step 2: Convert to fraction form
    871,300.20/1,307,015.10 = 310,261.80/x
  3. Step 3: Cross multiply
    871,300.20x = 1,307,015.10 × 310,261.80
  4. Step 4: Simplify right side
    871,300.20x = 405,516,857,553.18
  5. Step 5: Solve for x
    x = 405,516,857,553.18/871,300.20
  6. Step 6: Final answer
    x = 465,415.77

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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.