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Finding the Fourth Proportional to 639,492.70, 960,664.65 and 534,516.70

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Solution

The fourth proportional to 639,492.70, 960,664.65 and 534,516.70 is: 802,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,492.70 : 960,664.65 = 534,516.70 : x
  2. Step 2: Convert to fraction form
    639,492.70/960,664.65 = 534,516.70/x
  3. Step 3: Cross multiply
    639,492.70x = 960,664.65 × 534,516.70
  4. Step 4: Simplify right side
    639,492.70x = 513,491,298,524.66
  5. Step 5: Solve for x
    x = 513,491,298,524.66/639,492.70
  6. Step 6: Final answer
    x = 802,966.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.