Home / 1,128,072.02-1,691,987.54-318,436.52

Finding the Fourth Proportional to 1,128,072.02, 1,691,987.54 and 318,436.52

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Solution

The fourth proportional to 1,128,072.02, 1,691,987.54 and 318,436.52 is: 477,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,072.02 : 1,691,987.54 = 318,436.52 : x
  2. Step 2: Convert to fraction form
    1,128,072.02/1,691,987.54 = 318,436.52/x
  3. Step 3: Cross multiply
    1,128,072.02x = 1,691,987.54 × 318,436.52
  4. Step 4: Simplify right side
    1,128,072.02x = 538,790,614,068.84
  5. Step 5: Solve for x
    x = 538,790,614,068.84/1,128,072.02
  6. Step 6: Final answer
    x = 477,620.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.