Home / 818,548.80-1,121,416.95-787,867.54

Finding the Fourth Proportional to 818,548.80, 1,121,416.95 and 787,867.54

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Solution

The fourth proportional to 818,548.80, 1,121,416.95 and 787,867.54 is: 1,079,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,548.80 : 1,121,416.95 = 787,867.54 : x
  2. Step 2: Convert to fraction form
    818,548.80/1,121,416.95 = 787,867.54/x
  3. Step 3: Cross multiply
    818,548.80x = 1,121,416.95 × 787,867.54
  4. Step 4: Simplify right side
    818,548.80x = 883,528,013,710.80
  5. Step 5: Solve for x
    x = 883,528,013,710.80/818,548.80
  6. Step 6: Final answer
    x = 1,079,383.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.