Home / 1,288,187.64-1,777,754.50-715,227.80

Finding the Fourth Proportional to 1,288,187.64, 1,777,754.50 and 715,227.80

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Solution

The fourth proportional to 1,288,187.64, 1,777,754.50 and 715,227.80 is: 987,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,187.64 : 1,777,754.50 = 715,227.80 : x
  2. Step 2: Convert to fraction form
    1,288,187.64/1,777,754.50 = 715,227.80/x
  3. Step 3: Cross multiply
    1,288,187.64x = 1,777,754.50 × 715,227.80
  4. Step 4: Simplify right side
    1,288,187.64x = 1,271,499,439,975.10
  5. Step 5: Solve for x
    x = 1,271,499,439,975.10/1,288,187.64
  6. Step 6: Final answer
    x = 987,045.21

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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.