Home / 766,165.23-1,057,299.48-421,994.61

Finding the Fourth Proportional to 766,165.23, 1,057,299.48 and 421,994.61

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Solution

The fourth proportional to 766,165.23, 1,057,299.48 and 421,994.61 is: 582,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,165.23 : 1,057,299.48 = 421,994.61 : x
  2. Step 2: Convert to fraction form
    766,165.23/1,057,299.48 = 421,994.61/x
  3. Step 3: Cross multiply
    766,165.23x = 1,057,299.48 × 421,994.61
  4. Step 4: Simplify right side
    766,165.23x = 446,174,681,715.80
  5. Step 5: Solve for x
    x = 446,174,681,715.80/766,165.23
  6. Step 6: Final answer
    x = 582,347.86

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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.