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Finding the Fourth Proportional to 1,245,599.04, 1,719,206.46 and 815,629.44

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Solution

The fourth proportional to 1,245,599.04, 1,719,206.46 and 815,629.44 is: 1,125,751.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,599.04 : 1,719,206.46 = 815,629.44 : x
  2. Step 2: Convert to fraction form
    1,245,599.04/1,719,206.46 = 815,629.44/x
  3. Step 3: Cross multiply
    1,245,599.04x = 1,719,206.46 × 815,629.44
  4. Step 4: Simplify right side
    1,245,599.04x = 1,402,235,402,214.18
  5. Step 5: Solve for x
    x = 1,402,235,402,214.18/1,245,599.04
  6. Step 6: Final answer
    x = 1,125,751.83

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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.