Home / 763,978.32-1,145,946.78-258,535.89

Finding the Fourth Proportional to 763,978.32, 1,145,946.78 and 258,535.89

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Solution

The fourth proportional to 763,978.32, 1,145,946.78 and 258,535.89 is: 387,796.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,978.32 : 1,145,946.78 = 258,535.89 : x
  2. Step 2: Convert to fraction form
    763,978.32/1,145,946.78 = 258,535.89/x
  3. Step 3: Cross multiply
    763,978.32x = 1,145,946.78 × 258,535.89
  4. Step 4: Simplify right side
    763,978.32x = 296,268,370,659.93
  5. Step 5: Solve for x
    x = 296,268,370,659.93/763,978.32
  6. Step 6: Final answer
    x = 387,796.83

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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.