Home / 7,129,121.80-10,693,682.70-6,877,179.40

Finding the Fourth Proportional to 7,129,121.80, 10,693,682.70 and 6,877,179.40

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Solution

The fourth proportional to 7,129,121.80, 10,693,682.70 and 6,877,179.40 is: 10,315,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,121.80 : 10,693,682.70 = 6,877,179.40 : x
  2. Step 2: Convert to fraction form
    7,129,121.80/10,693,682.70 = 6,877,179.40/x
  3. Step 3: Cross multiply
    7,129,121.80x = 10,693,682.70 × 6,877,179.40
  4. Step 4: Simplify right side
    7,129,121.80x = 73,542,374,374,576.38
  5. Step 5: Solve for x
    x = 73,542,374,374,576.38/7,129,121.80
  6. Step 6: Final answer
    x = 10,315,769.10

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Similar ratio
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1.5x scale

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.