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Finding the Fourth Proportional to 639,522.43, 882,543.77 and 353,044.87

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Solution

The fourth proportional to 639,522.43, 882,543.77 and 353,044.87 is: 487,203.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,522.43 : 882,543.77 = 353,044.87 : x
  2. Step 2: Convert to fraction form
    639,522.43/882,543.77 = 353,044.87/x
  3. Step 3: Cross multiply
    639,522.43x = 882,543.77 × 353,044.87
  4. Step 4: Simplify right side
    639,522.43x = 311,577,547,901.29
  5. Step 5: Solve for x
    x = 311,577,547,901.29/639,522.43
  6. Step 6: Final answer
    x = 487,203.47

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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.