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Finding the Fourth Proportional to 639,015.16, 881,843.88 and 352,535.16

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Solution

The fourth proportional to 639,015.16, 881,843.88 and 352,535.16 is: 486,500.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,015.16 : 881,843.88 = 352,535.16 : x
  2. Step 2: Convert to fraction form
    639,015.16/881,843.88 = 352,535.16/x
  3. Step 3: Cross multiply
    639,015.16x = 881,843.88 × 352,535.16
  4. Step 4: Simplify right side
    639,015.16x = 310,880,973,330.82
  5. Step 5: Solve for x
    x = 310,880,973,330.82/639,015.16
  6. Step 6: Final answer
    x = 486,500.15

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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.