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Finding the Fourth Proportional to 639,062.04, 881,275.62 and 495,769.80

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Solution

The fourth proportional to 639,062.04, 881,275.62 and 495,769.80 is: 683,673.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,062.04 : 881,275.62 = 495,769.80 : x
  2. Step 2: Convert to fraction form
    639,062.04/881,275.62 = 495,769.80/x
  3. Step 3: Cross multiply
    639,062.04x = 881,275.62 × 495,769.80
  4. Step 4: Simplify right side
    639,062.04x = 436,909,837,872.28
  5. Step 5: Solve for x
    x = 436,909,837,872.28/639,062.04
  6. Step 6: Final answer
    x = 683,673.59

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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.