Home / 1,387,554.94-2,078,381.77-666,838.22

Finding the Fourth Proportional to 1,387,554.94, 2,078,381.77 and 666,838.22

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Solution

The fourth proportional to 1,387,554.94, 2,078,381.77 and 666,838.22 is: 998,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,554.94 : 2,078,381.77 = 666,838.22 : x
  2. Step 2: Convert to fraction form
    1,387,554.94/2,078,381.77 = 666,838.22/x
  3. Step 3: Cross multiply
    1,387,554.94x = 2,078,381.77 × 666,838.22
  4. Step 4: Simplify right side
    1,387,554.94x = 1,385,944,399,987.25
  5. Step 5: Solve for x
    x = 1,385,944,399,987.25/1,387,554.94
  6. Step 6: Final answer
    x = 998,839.30

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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.