Home / 1,321,356.15-1,982,165.04-422,572.05

Finding the Fourth Proportional to 1,321,356.15, 1,982,165.04 and 422,572.05

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Solution

The fourth proportional to 1,321,356.15, 1,982,165.04 and 422,572.05 is: 633,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,356.15 : 1,982,165.04 = 422,572.05 : x
  2. Step 2: Convert to fraction form
    1,321,356.15/1,982,165.04 = 422,572.05/x
  3. Step 3: Cross multiply
    1,321,356.15x = 1,982,165.04 × 422,572.05
  4. Step 4: Simplify right side
    1,321,356.15x = 837,607,544,391.13
  5. Step 5: Solve for x
    x = 837,607,544,391.13/1,321,356.15
  6. Step 6: Final answer
    x = 633,899.91

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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.