Home / 12,479,538.40-18,722,806.80-5,294,514.40

Finding the Fourth Proportional to 12,479,538.40, 18,722,806.80 and 5,294,514.40

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Solution

The fourth proportional to 12,479,538.40, 18,722,806.80 and 5,294,514.40 is: 7,943,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479,538.40 : 18,722,806.80 = 5,294,514.40 : x
  2. Step 2: Convert to fraction form
    12,479,538.40/18,722,806.80 = 5,294,514.40/x
  3. Step 3: Cross multiply
    12,479,538.40x = 18,722,806.80 × 5,294,514.40
  4. Step 4: Simplify right side
    12,479,538.40x = 99,128,170,211,017.94
  5. Step 5: Solve for x
    x = 99,128,170,211,017.94/12,479,538.40
  6. Step 6: Final answer
    x = 7,943,256.16

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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.