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Finding the Fourth Proportional to 1,074,895.08, 1,612,619.62 and 771,640.80

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Solution

The fourth proportional to 1,074,895.08, 1,612,619.62 and 771,640.80 is: 1,157,660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074,895.08 : 1,612,619.62 = 771,640.80 : x
  2. Step 2: Convert to fraction form
    1,074,895.08/1,612,619.62 = 771,640.80/x
  3. Step 3: Cross multiply
    1,074,895.08x = 1,612,619.62 × 771,640.80
  4. Step 4: Simplify right side
    1,074,895.08x = 1,244,363,093,672.50
  5. Step 5: Solve for x
    x = 1,244,363,093,672.50/1,074,895.08
  6. Step 6: Final answer
    x = 1,157,660.05

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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.