Home / 828,120.24-1,242,180.64-259,545.45

Finding the Fourth Proportional to 828,120.24, 1,242,180.64 and 259,545.45

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Solution

The fourth proportional to 828,120.24, 1,242,180.64 and 259,545.45 is: 389,318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,120.24 : 1,242,180.64 = 259,545.45 : x
  2. Step 2: Convert to fraction form
    828,120.24/1,242,180.64 = 259,545.45/x
  3. Step 3: Cross multiply
    828,120.24x = 1,242,180.64 × 259,545.45
  4. Step 4: Simplify right side
    828,120.24x = 322,402,331,961.79
  5. Step 5: Solve for x
    x = 322,402,331,961.79/828,120.24
  6. Step 6: Final answer
    x = 389,318.26

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1.5x scale

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.