Home / 10,317,779.20-15,476,668.80-5,215,945.60

Finding the Fourth Proportional to 10,317,779.20, 15,476,668.80 and 5,215,945.60

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Solution

The fourth proportional to 10,317,779.20, 15,476,668.80 and 5,215,945.60 is: 7,823,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,317,779.20 : 15,476,668.80 = 5,215,945.60 : x
  2. Step 2: Convert to fraction form
    10,317,779.20/15,476,668.80 = 5,215,945.60/x
  3. Step 3: Cross multiply
    10,317,779.20x = 15,476,668.80 × 5,215,945.60
  4. Step 4: Simplify right side
    10,317,779.20x = 80,725,462,530,017.28
  5. Step 5: Solve for x
    x = 80,725,462,530,017.28/10,317,779.20
  6. Step 6: Final answer
    x = 7,823,918.40

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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.