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Finding the Fourth Proportional to 1,314,690, 1,814,272.38 and 711,078

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Solution

The fourth proportional to 1,314,690, 1,814,272.38 and 711,078 is: 981,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,690 : 1,814,272.38 = 711,078 : x
  2. Step 2: Convert to fraction form
    1,314,690/1,814,272.38 = 711,078/x
  3. Step 3: Cross multiply
    1,314,690x = 1,814,272.38 × 711,078
  4. Step 4: Simplify right side
    1,314,690x = 1,290,089,175,425.64
  5. Step 5: Solve for x
    x = 1,290,089,175,425.64/1,314,690
  6. Step 6: Final answer
    x = 981,287.74

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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.