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Finding the Fourth Proportional to 1,348,968.18, 1,862,443.89 and 865,741.62

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Solution

The fourth proportional to 1,348,968.18, 1,862,443.89 and 865,741.62 is: 1,195,280.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348,968.18 : 1,862,443.89 = 865,741.62 : x
  2. Step 2: Convert to fraction form
    1,348,968.18/1,862,443.89 = 865,741.62/x
  3. Step 3: Cross multiply
    1,348,968.18x = 1,862,443.89 × 865,741.62
  4. Step 4: Simplify right side
    1,348,968.18x = 1,612,395,190,487.70
  5. Step 5: Solve for x
    x = 1,612,395,190,487.70/1,348,968.18
  6. Step 6: Final answer
    x = 1,195,280.37

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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.