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Finding the Fourth Proportional to 1,293,324.54, 1,784,788.43 and 749,775.45

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Solution

The fourth proportional to 1,293,324.54, 1,784,788.43 and 749,775.45 is: 1,034,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,324.54 : 1,784,788.43 = 749,775.45 : x
  2. Step 2: Convert to fraction form
    1,293,324.54/1,784,788.43 = 749,775.45/x
  3. Step 3: Cross multiply
    1,293,324.54x = 1,784,788.43 × 749,775.45
  4. Step 4: Simplify right side
    1,293,324.54x = 1,338,190,551,202.12
  5. Step 5: Solve for x
    x = 1,338,190,551,202.12/1,293,324.54
  6. Step 6: Final answer
    x = 1,034,690.45

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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.