Home / 515,621.43-711,565.16-286,193.45

Finding the Fourth Proportional to 515,621.43, 711,565.16 and 286,193.45

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Solution

The fourth proportional to 515,621.43, 711,565.16 and 286,193.45 is: 394,951.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,621.43 : 711,565.16 = 286,193.45 : x
  2. Step 2: Convert to fraction form
    515,621.43/711,565.16 = 286,193.45/x
  3. Step 3: Cross multiply
    515,621.43x = 711,565.16 × 286,193.45
  4. Step 4: Simplify right side
    515,621.43x = 203,645,288,388.15
  5. Step 5: Solve for x
    x = 203,645,288,388.15/515,621.43
  6. Step 6: Final answer
    x = 394,951.17

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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.