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Finding the Fourth Proportional to 917,059.20, 1,376,625.60 and 707,625.60

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Solution

The fourth proportional to 917,059.20, 1,376,625.60 and 707,625.60 is: 1,062,238.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,059.20 : 1,376,625.60 = 707,625.60 : x
  2. Step 2: Convert to fraction form
    917,059.20/1,376,625.60 = 707,625.60/x
  3. Step 3: Cross multiply
    917,059.20x = 1,376,625.60 × 707,625.60
  4. Step 4: Simplify right side
    917,059.20x = 974,135,516,175.36
  5. Step 5: Solve for x
    x = 974,135,516,175.36/917,059.20
  6. Step 6: Final answer
    x = 1,062,238.42

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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.