Home / 515,299.44-711,113.32-288,945.04

Finding the Fourth Proportional to 515,299.44, 711,113.32 and 288,945.04

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Solution

The fourth proportional to 515,299.44, 711,113.32 and 288,945.04 is: 398,744.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,299.44 : 711,113.32 = 288,945.04 : x
  2. Step 2: Convert to fraction form
    515,299.44/711,113.32 = 288,945.04/x
  3. Step 3: Cross multiply
    515,299.44x = 711,113.32 × 288,945.04
  4. Step 4: Simplify right side
    515,299.44x = 205,472,666,691.93
  5. Step 5: Solve for x
    x = 205,472,666,691.93/515,299.44
  6. Step 6: Final answer
    x = 398,744.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.