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Finding the Fourth Proportional to 1,416,566.46, 1,954,804.72 and 771,972.90

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Solution

The fourth proportional to 1,416,566.46, 1,954,804.72 and 771,972.90 is: 1,065,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416,566.46 : 1,954,804.72 = 771,972.90 : x
  2. Step 2: Convert to fraction form
    1,416,566.46/1,954,804.72 = 771,972.90/x
  3. Step 3: Cross multiply
    1,416,566.46x = 1,954,804.72 × 771,972.90
  4. Step 4: Simplify right side
    1,416,566.46x = 1,509,056,268,632.09
  5. Step 5: Solve for x
    x = 1,509,056,268,632.09/1,416,566.46
  6. Step 6: Final answer
    x = 1,065,291.54

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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.