Home / 1,288,469.42-1,777,801.47-779,160.86

Finding the Fourth Proportional to 1,288,469.42, 1,777,801.47 and 779,160.86

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Solution

The fourth proportional to 1,288,469.42, 1,777,801.47 and 779,160.86 is: 1,075,068.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,469.42 : 1,777,801.47 = 779,160.86 : x
  2. Step 2: Convert to fraction form
    1,288,469.42/1,777,801.47 = 779,160.86/x
  3. Step 3: Cross multiply
    1,288,469.42x = 1,777,801.47 × 779,160.86
  4. Step 4: Simplify right side
    1,288,469.42x = 1,385,193,322,274.46
  5. Step 5: Solve for x
    x = 1,385,193,322,274.46/1,288,469.42
  6. Step 6: Final answer
    x = 1,075,068.84

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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.