Home / 1,288,123.74-1,777,528.50-715,163.76

Finding the Fourth Proportional to 1,288,123.74, 1,777,528.50 and 715,163.76

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Solution

The fourth proportional to 1,288,123.74, 1,777,528.50 and 715,163.76 is: 986,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,123.74 : 1,777,528.50 = 715,163.76 : x
  2. Step 2: Convert to fraction form
    1,288,123.74/1,777,528.50 = 715,163.76/x
  3. Step 3: Cross multiply
    1,288,123.74x = 1,777,528.50 × 715,163.76
  4. Step 4: Simplify right side
    1,288,123.74x = 1,271,223,965,567.16
  5. Step 5: Solve for x
    x = 1,271,223,965,567.16/1,288,123.74
  6. Step 6: Final answer
    x = 986,880.32

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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.