Home / 1,288,158.30-1,777,713.93-715,198.50

Finding the Fourth Proportional to 1,288,158.30, 1,777,713.93 and 715,198.50

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Solution

The fourth proportional to 1,288,158.30, 1,777,713.93 and 715,198.50 is: 987,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,158.30 : 1,777,713.93 = 715,198.50 : x
  2. Step 2: Convert to fraction form
    1,288,158.30/1,777,713.93 = 715,198.50/x
  3. Step 3: Cross multiply
    1,288,158.30x = 1,777,713.93 × 715,198.50
  4. Step 4: Simplify right side
    1,288,158.30x = 1,271,418,336,165.11
  5. Step 5: Solve for x
    x = 1,271,418,336,165.11/1,288,158.30
  6. Step 6: Final answer
    x = 987,004.73

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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.