Home / 871,337.20-1,307,070.60-310,298.80

Finding the Fourth Proportional to 871,337.20, 1,307,070.60 and 310,298.80

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Solution

The fourth proportional to 871,337.20, 1,307,070.60 and 310,298.80 is: 465,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,337.20 : 1,307,070.60 = 310,298.80 : x
  2. Step 2: Convert to fraction form
    871,337.20/1,307,070.60 = 310,298.80/x
  3. Step 3: Cross multiply
    871,337.20x = 1,307,070.60 × 310,298.80
  4. Step 4: Simplify right side
    871,337.20x = 405,582,438,695.28
  5. Step 5: Solve for x
    x = 405,582,438,695.28/871,337.20
  6. Step 6: Final answer
    x = 465,471.28

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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.