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Finding the Fourth Proportional to 1,370,304.15, 1,890,971.48 and 758,458.10

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Solution

The fourth proportional to 1,370,304.15, 1,890,971.48 and 758,458.10 is: 1,046,645.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,304.15 : 1,890,971.48 = 758,458.10 : x
  2. Step 2: Convert to fraction form
    1,370,304.15/1,890,971.48 = 758,458.10/x
  3. Step 3: Cross multiply
    1,370,304.15x = 1,890,971.48 × 758,458.10
  4. Step 4: Simplify right side
    1,370,304.15x = 1,434,222,622,627.84
  5. Step 5: Solve for x
    x = 1,434,222,622,627.84/1,370,304.15
  6. Step 6: Final answer
    x = 1,046,645.46

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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.