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Finding the Fourth Proportional to 1,258,842.97, 1,888,277.54 and 1,007,719.78

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Solution

The fourth proportional to 1,258,842.97, 1,888,277.54 and 1,007,719.78 is: 1,511,590.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,842.97 : 1,888,277.54 = 1,007,719.78 : x
  2. Step 2: Convert to fraction form
    1,258,842.97/1,888,277.54 = 1,007,719.78/x
  3. Step 3: Cross multiply
    1,258,842.97x = 1,888,277.54 × 1,007,719.78
  4. Step 4: Simplify right side
    1,258,842.97x = 1,902,854,627,187.74
  5. Step 5: Solve for x
    x = 1,902,854,627,187.74/1,258,842.97
  6. Step 6: Final answer
    x = 1,511,590.14

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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.