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Finding the Fourth Proportional to 815,866.12, 1,125,878.22 and 453,268.72

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Solution

The fourth proportional to 815,866.12, 1,125,878.22 and 453,268.72 is: 625,501.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,866.12 : 1,125,878.22 = 453,268.72 : x
  2. Step 2: Convert to fraction form
    815,866.12/1,125,878.22 = 453,268.72/x
  3. Step 3: Cross multiply
    815,866.12x = 1,125,878.22 × 453,268.72
  4. Step 4: Simplify right side
    815,866.12x = 510,325,379,655.28
  5. Step 5: Solve for x
    x = 510,325,379,655.28/815,866.12
  6. Step 6: Final answer
    x = 625,501.37

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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.