Home / 842,721.96-1,264,208.80-310,202.48

Finding the Fourth Proportional to 842,721.96, 1,264,208.80 and 310,202.48

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Solution

The fourth proportional to 842,721.96, 1,264,208.80 and 310,202.48 is: 465,350.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,721.96 : 1,264,208.80 = 310,202.48 : x
  2. Step 2: Convert to fraction form
    842,721.96/1,264,208.80 = 310,202.48/x
  3. Step 3: Cross multiply
    842,721.96x = 1,264,208.80 × 310,202.48
  4. Step 4: Simplify right side
    842,721.96x = 392,160,704,997.82
  5. Step 5: Solve for x
    x = 392,160,704,997.82/842,721.96
  6. Step 6: Final answer
    x = 465,350.05

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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.