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Finding the Fourth Proportional to 1,353,556.13, 1,867,907.45 and 749,944.13

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Solution

The fourth proportional to 1,353,556.13, 1,867,907.45 and 749,944.13 is: 1,034,922.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,556.13 : 1,867,907.45 = 749,944.13 : x
  2. Step 2: Convert to fraction form
    1,353,556.13/1,867,907.45 = 749,944.13/x
  3. Step 3: Cross multiply
    1,353,556.13x = 1,867,907.45 × 749,944.13
  4. Step 4: Simplify right side
    1,353,556.13x = 1,400,826,220,046.09
  5. Step 5: Solve for x
    x = 1,400,826,220,046.09/1,353,556.13
  6. Step 6: Final answer
    x = 1,034,922.89

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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.