Home / 7,129,129.80-10,693,694.70-6,877,187.40

Finding the Fourth Proportional to 7,129,129.80, 10,693,694.70 and 6,877,187.40

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Solution

The fourth proportional to 7,129,129.80, 10,693,694.70 and 6,877,187.40 is: 10,315,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,129.80 : 10,693,694.70 = 6,877,187.40 : x
  2. Step 2: Convert to fraction form
    7,129,129.80/10,693,694.70 = 6,877,187.40/x
  3. Step 3: Cross multiply
    7,129,129.80x = 10,693,694.70 × 6,877,187.40
  4. Step 4: Simplify right side
    7,129,129.80x = 73,542,542,450,286.78
  5. Step 5: Solve for x
    x = 73,542,542,450,286.78/7,129,129.80
  6. Step 6: Final answer
    x = 10,315,781.10

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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.