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Finding the Fourth Proportional to 876,611.80, 1,314,917.70 and 719,018.20

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Solution

The fourth proportional to 876,611.80, 1,314,917.70 and 719,018.20 is: 1,078,527.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,611.80 : 1,314,917.70 = 719,018.20 : x
  2. Step 2: Convert to fraction form
    876,611.80/1,314,917.70 = 719,018.20/x
  3. Step 3: Cross multiply
    876,611.80x = 1,314,917.70 × 719,018.20
  4. Step 4: Simplify right side
    876,611.80x = 945,449,757,802.14
  5. Step 5: Solve for x
    x = 945,449,757,802.14/876,611.80
  6. Step 6: Final answer
    x = 1,078,527.30

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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.