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Finding the Fourth Proportional to 639,042.26, 881,881.16 and 352,570.77

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Solution

The fourth proportional to 639,042.26, 881,881.16 and 352,570.77 is: 486,549.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,042.26 : 881,881.16 = 352,570.77 : x
  2. Step 2: Convert to fraction form
    639,042.26/881,881.16 = 352,570.77/x
  3. Step 3: Cross multiply
    639,042.26x = 881,881.16 × 352,570.77
  4. Step 4: Simplify right side
    639,042.26x = 310,925,517,866.84
  5. Step 5: Solve for x
    x = 310,925,517,866.84/639,042.26
  6. Step 6: Final answer
    x = 486,549.23

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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.