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Finding the Fourth Proportional to 797,676, 1,100,792.88 and 439,980

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Solution

The fourth proportional to 797,676, 1,100,792.88 and 439,980 is: 607,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    797,676 : 1,100,792.88 = 439,980 : x
  2. Step 2: Convert to fraction form
    797,676/1,100,792.88 = 439,980/x
  3. Step 3: Cross multiply
    797,676x = 1,100,792.88 × 439,980
  4. Step 4: Simplify right side
    797,676x = 484,326,851,342.40
  5. Step 5: Solve for x
    x = 484,326,851,342.40/797,676
  6. Step 6: Final answer
    x = 607,172.40

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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.