Home / 1,138,301.22-1,707,518.67-428,335.41

Finding the Fourth Proportional to 1,138,301.22, 1,707,518.67 and 428,335.41

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Solution

The fourth proportional to 1,138,301.22, 1,707,518.67 and 428,335.41 is: 642,528.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,301.22 : 1,707,518.67 = 428,335.41 : x
  2. Step 2: Convert to fraction form
    1,138,301.22/1,707,518.67 = 428,335.41/x
  3. Step 3: Cross multiply
    1,138,301.22x = 1,707,518.67 × 428,335.41
  4. Step 4: Simplify right side
    1,138,301.22x = 731,390,709,597.11
  5. Step 5: Solve for x
    x = 731,390,709,597.11/1,138,301.22
  6. Step 6: Final answer
    x = 642,528.27

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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.