Home / 842,960.40-1,264,003.20-310,207.20

Finding the Fourth Proportional to 842,960.40, 1,264,003.20 and 310,207.20

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Solution

The fourth proportional to 842,960.40, 1,264,003.20 and 310,207.20 is: 465,149.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,960.40 : 1,264,003.20 = 310,207.20 : x
  2. Step 2: Convert to fraction form
    842,960.40/1,264,003.20 = 310,207.20/x
  3. Step 3: Cross multiply
    842,960.40x = 1,264,003.20 × 310,207.20
  4. Step 4: Simplify right side
    842,960.40x = 392,102,893,463.04
  5. Step 5: Solve for x
    x = 392,102,893,463.04/842,960.40
  6. Step 6: Final answer
    x = 465,149.84

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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.