Home / 818,119.80-1,129,002.48-455,548.02

Finding the Fourth Proportional to 818,119.80, 1,129,002.48 and 455,548.02

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Solution

The fourth proportional to 818,119.80, 1,129,002.48 and 455,548.02 is: 628,654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,119.80 : 1,129,002.48 = 455,548.02 : x
  2. Step 2: Convert to fraction form
    818,119.80/1,129,002.48 = 455,548.02/x
  3. Step 3: Cross multiply
    818,119.80x = 1,129,002.48 × 455,548.02
  4. Step 4: Simplify right side
    818,119.80x = 514,314,844,339.09
  5. Step 5: Solve for x
    x = 514,314,844,339.09/818,119.80
  6. Step 6: Final answer
    x = 628,654.68

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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.