Home / 1,287,796.70-1,777,166.43-804,642.20

Finding the Fourth Proportional to 1,287,796.70, 1,777,166.43 and 804,642.20

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Solution

The fourth proportional to 1,287,796.70, 1,777,166.43 and 804,642.20 is: 1,110,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,796.70 : 1,777,166.43 = 804,642.20 : x
  2. Step 2: Convert to fraction form
    1,287,796.70/1,777,166.43 = 804,642.20/x
  3. Step 3: Cross multiply
    1,287,796.70x = 1,777,166.43 × 804,642.20
  4. Step 4: Simplify right side
    1,287,796.70x = 1,429,983,106,001.35
  5. Step 5: Solve for x
    x = 1,429,983,106,001.35/1,287,796.70
  6. Step 6: Final answer
    x = 1,110,410.60

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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.