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Finding the Fourth Proportional to 1,147,862.31, 1,583,622.14 and 717,979.11

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Solution

The fourth proportional to 1,147,862.31, 1,583,622.14 and 717,979.11 is: 990,543.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,862.31 : 1,583,622.14 = 717,979.11 : x
  2. Step 2: Convert to fraction form
    1,147,862.31/1,583,622.14 = 717,979.11/x
  3. Step 3: Cross multiply
    1,147,862.31x = 1,583,622.14 × 717,979.11
  4. Step 4: Simplify right side
    1,147,862.31x = 1,137,007,611,063.60
  5. Step 5: Solve for x
    x = 1,137,007,611,063.60/1,147,862.31
  6. Step 6: Final answer
    x = 990,543.55

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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.