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Finding the Fourth Proportional to 1,965,631.86, 2,948,445.66 and 617,912.25

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Solution

The fourth proportional to 1,965,631.86, 2,948,445.66 and 617,912.25 is: 926,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965,631.86 : 2,948,445.66 = 617,912.25 : x
  2. Step 2: Convert to fraction form
    1,965,631.86/2,948,445.66 = 617,912.25/x
  3. Step 3: Cross multiply
    1,965,631.86x = 2,948,445.66 × 617,912.25
  4. Step 4: Simplify right side
    1,965,631.86x = 1,821,880,683,033.83
  5. Step 5: Solve for x
    x = 1,821,880,683,033.83/1,965,631.86
  6. Step 6: Final answer
    x = 926,867.70

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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.