Home / 7,178,900.46-9,906,913.38-3,915,785.34

Finding the Fourth Proportional to 7,178,900.46, 9,906,913.38 and 3,915,785.34

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Solution

The fourth proportional to 7,178,900.46, 9,906,913.38 and 3,915,785.34 is: 5,403,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,900.46 : 9,906,913.38 = 3,915,785.34 : x
  2. Step 2: Convert to fraction form
    7,178,900.46/9,906,913.38 = 3,915,785.34/x
  3. Step 3: Cross multiply
    7,178,900.46x = 9,906,913.38 × 3,915,785.34
  4. Step 4: Simplify right side
    7,178,900.46x = 38,793,346,178,053.85
  5. Step 5: Solve for x
    x = 38,793,346,178,053.85/7,178,900.46
  6. Step 6: Final answer
    x = 5,403,800.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.