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Finding the Fourth Proportional to 891,854.10, 1,228,738.64 and 849,338.82

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Solution

The fourth proportional to 891,854.10, 1,228,738.64 and 849,338.82 is: 1,170,163.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,854.10 : 1,228,738.64 = 849,338.82 : x
  2. Step 2: Convert to fraction form
    891,854.10/1,228,738.64 = 849,338.82/x
  3. Step 3: Cross multiply
    891,854.10x = 1,228,738.64 × 849,338.82
  4. Step 4: Simplify right side
    891,854.10x = 1,043,615,426,586.00
  5. Step 5: Solve for x
    x = 1,043,615,426,586.00/891,854.10
  6. Step 6: Final answer
    x = 1,170,163.85

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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.