Home / 1,005,952.80-1,387,971.86-638,295.90

Finding the Fourth Proportional to 1,005,952.80, 1,387,971.86 and 638,295.90

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Solution

The fourth proportional to 1,005,952.80, 1,387,971.86 and 638,295.90 is: 880,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,952.80 : 1,387,971.86 = 638,295.90 : x
  2. Step 2: Convert to fraction form
    1,005,952.80/1,387,971.86 = 638,295.90/x
  3. Step 3: Cross multiply
    1,005,952.80x = 1,387,971.86 × 638,295.90
  4. Step 4: Simplify right side
    1,005,952.80x = 885,936,747,553.37
  5. Step 5: Solve for x
    x = 885,936,747,553.37/1,005,952.80
  6. Step 6: Final answer
    x = 880,694.15

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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.