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Finding the Fourth Proportional to 1,370,083.82, 1,890,719.15 and 758,278.67

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Solution

The fourth proportional to 1,370,083.82, 1,890,719.15 and 758,278.67 is: 1,046,426.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,083.82 : 1,890,719.15 = 758,278.67 : x
  2. Step 2: Convert to fraction form
    1,370,083.82/1,890,719.15 = 758,278.67/x
  3. Step 3: Cross multiply
    1,370,083.82x = 1,890,719.15 × 758,278.67
  4. Step 4: Simplify right side
    1,370,083.82x = 1,433,691,989,160.54
  5. Step 5: Solve for x
    x = 1,433,691,989,160.54/1,370,083.82
  6. Step 6: Final answer
    x = 1,046,426.48

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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.