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Finding the Fourth Proportional to 2,906,324, 4,360,186 and 911,780

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Solution

The fourth proportional to 2,906,324, 4,360,186 and 911,780 is: 1,367,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906,324 : 4,360,186 = 911,780 : x
  2. Step 2: Convert to fraction form
    2,906,324/4,360,186 = 911,780/x
  3. Step 3: Cross multiply
    2,906,324x = 4,360,186 × 911,780
  4. Step 4: Simplify right side
    2,906,324x = 3,975,530,391,080
  5. Step 5: Solve for x
    x = 3,975,530,391,080/2,906,324
  6. Step 6: Final answer
    x = 1,367,889.61

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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.