Home / 7,872,886.40-11,809,329.60-7,176,156.80

Finding the Fourth Proportional to 7,872,886.40, 11,809,329.60 and 7,176,156.80

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Solution

The fourth proportional to 7,872,886.40, 11,809,329.60 and 7,176,156.80 is: 10,764,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,886.40 : 11,809,329.60 = 7,176,156.80 : x
  2. Step 2: Convert to fraction form
    7,872,886.40/11,809,329.60 = 7,176,156.80/x
  3. Step 3: Cross multiply
    7,872,886.40x = 11,809,329.60 × 7,176,156.80
  4. Step 4: Simplify right side
    7,872,886.40x = 84,745,600,912,481.28
  5. Step 5: Solve for x
    x = 84,745,600,912,481.28/7,872,886.40
  6. Step 6: Final answer
    x = 10,764,235.20

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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.