Home / 828,120.11-1,242,180.45-259,545.32

Finding the Fourth Proportional to 828,120.11, 1,242,180.45 and 259,545.32

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Solution

The fourth proportional to 828,120.11, 1,242,180.45 and 259,545.32 is: 389,318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,120.11 : 1,242,180.45 = 259,545.32 : x
  2. Step 2: Convert to fraction form
    828,120.11/1,242,180.45 = 259,545.32/x
  3. Step 3: Cross multiply
    828,120.11x = 1,242,180.45 × 259,545.32
  4. Step 4: Simplify right side
    828,120.11x = 322,402,128,681.33
  5. Step 5: Solve for x
    x = 322,402,128,681.33/828,120.11
  6. Step 6: Final answer
    x = 389,318.08

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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.