Home / 766,125.27-1,057,239.74-421,993.40

Finding the Fourth Proportional to 766,125.27, 1,057,239.74 and 421,993.40

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Solution

The fourth proportional to 766,125.27, 1,057,239.74 and 421,993.40 is: 582,343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,125.27 : 1,057,239.74 = 421,993.40 : x
  2. Step 2: Convert to fraction form
    766,125.27/1,057,239.74 = 421,993.40/x
  3. Step 3: Cross multiply
    766,125.27x = 1,057,239.74 × 421,993.40
  4. Step 4: Simplify right side
    766,125.27x = 446,148,188,266.50
  5. Step 5: Solve for x
    x = 446,148,188,266.50/766,125.27
  6. Step 6: Final answer
    x = 582,343.65

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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.