Home / 1,288,291.80-1,777,808.52-715,317.24

Finding the Fourth Proportional to 1,288,291.80, 1,777,808.52 and 715,317.24

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Solution

The fourth proportional to 1,288,291.80, 1,777,808.52 and 715,317.24 is: 987,118.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,291.80 : 1,777,808.52 = 715,317.24 : x
  2. Step 2: Convert to fraction form
    1,288,291.80/1,777,808.52 = 715,317.24/x
  3. Step 3: Cross multiply
    1,288,291.80x = 1,777,808.52 × 715,317.24
  4. Step 4: Simplify right side
    1,288,291.80x = 1,271,697,083,774.88
  5. Step 5: Solve for x
    x = 1,271,697,083,774.88/1,288,291.80
  6. Step 6: Final answer
    x = 987,118.82

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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.