Home / 1,287,779.74-1,777,142.90-804,625.07

Finding the Fourth Proportional to 1,287,779.74, 1,777,142.90 and 804,625.07

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Solution

The fourth proportional to 1,287,779.74, 1,777,142.90 and 804,625.07 is: 1,110,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,779.74 : 1,777,142.90 = 804,625.07 : x
  2. Step 2: Convert to fraction form
    1,287,779.74/1,777,142.90 = 804,625.07/x
  3. Step 3: Cross multiply
    1,287,779.74x = 1,777,142.90 × 804,625.07
  4. Step 4: Simplify right side
    1,287,779.74x = 1,429,933,723,438.35
  5. Step 5: Solve for x
    x = 1,429,933,723,438.35/1,287,779.74
  6. Step 6: Final answer
    x = 1,110,386.88

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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.