Home / 1,387,556.94-2,078,384.77-666,840.22

Finding the Fourth Proportional to 1,387,556.94, 2,078,384.77 and 666,840.22

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Solution

The fourth proportional to 1,387,556.94, 2,078,384.77 and 666,840.22 is: 998,842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,556.94 : 2,078,384.77 = 666,840.22 : x
  2. Step 2: Convert to fraction form
    1,387,556.94/2,078,384.77 = 666,840.22/x
  3. Step 3: Cross multiply
    1,387,556.94x = 2,078,384.77 × 666,840.22
  4. Step 4: Simplify right side
    1,387,556.94x = 1,385,950,557,271.45
  5. Step 5: Solve for x
    x = 1,385,950,557,271.45/1,387,556.94
  6. Step 6: Final answer
    x = 998,842.29

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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.