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Finding the Fourth Proportional to 681,486.32, 1,020,304.92 and 360,911

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Solution

The fourth proportional to 681,486.32, 1,020,304.92 and 360,911 is: 540,347.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,486.32 : 1,020,304.92 = 360,911 : x
  2. Step 2: Convert to fraction form
    681,486.32/1,020,304.92 = 360,911/x
  3. Step 3: Cross multiply
    681,486.32x = 1,020,304.92 × 360,911
  4. Step 4: Simplify right side
    681,486.32x = 368,239,268,982.12
  5. Step 5: Solve for x
    x = 368,239,268,982.12/681,486.32
  6. Step 6: Final answer
    x = 540,347.26

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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.