Home / 1,288,144.80-1,777,557.44-715,184.80

Finding the Fourth Proportional to 1,288,144.80, 1,777,557.44 and 715,184.80

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Solution

The fourth proportional to 1,288,144.80, 1,777,557.44 and 715,184.80 is: 986,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,144.80 : 1,777,557.44 = 715,184.80 : x
  2. Step 2: Convert to fraction form
    1,288,144.80/1,777,557.44 = 715,184.80/x
  3. Step 3: Cross multiply
    1,288,144.80x = 1,777,557.44 × 715,184.80
  4. Step 4: Simplify right side
    1,288,144.80x = 1,271,282,062,214.91
  5. Step 5: Solve for x
    x = 1,271,282,062,214.91/1,288,144.80
  6. Step 6: Final answer
    x = 986,909.28

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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.