Home / 766,620.49-1,057,943.28-422,468.77

Finding the Fourth Proportional to 766,620.49, 1,057,943.28 and 422,468.77

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Solution

The fourth proportional to 766,620.49, 1,057,943.28 and 422,468.77 is: 583,010.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,620.49 : 1,057,943.28 = 422,468.77 : x
  2. Step 2: Convert to fraction form
    766,620.49/1,057,943.28 = 422,468.77/x
  3. Step 3: Cross multiply
    766,620.49x = 1,057,943.28 × 422,468.77
  4. Step 4: Simplify right side
    766,620.49x = 446,947,995,354.77
  5. Step 5: Solve for x
    x = 446,947,995,354.77/766,620.49
  6. Step 6: Final answer
    x = 583,010.76

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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.