Home / 843,128.46-1,163,559.87-499,161.78

Finding the Fourth Proportional to 843,128.46, 1,163,559.87 and 499,161.78

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Solution

The fourth proportional to 843,128.46, 1,163,559.87 and 499,161.78 is: 688,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,128.46 : 1,163,559.87 = 499,161.78 : x
  2. Step 2: Convert to fraction form
    843,128.46/1,163,559.87 = 499,161.78/x
  3. Step 3: Cross multiply
    843,128.46x = 1,163,559.87 × 499,161.78
  4. Step 4: Simplify right side
    843,128.46x = 580,804,615,845.77
  5. Step 5: Solve for x
    x = 580,804,615,845.77/843,128.46
  6. Step 6: Final answer
    x = 688,868.47

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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.