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Finding the Fourth Proportional to 634,008.66, 875,021.58 and 392,369.10

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Solution

The fourth proportional to 634,008.66, 875,021.58 and 392,369.10 is: 541,524.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,008.66 : 875,021.58 = 392,369.10 : x
  2. Step 2: Convert to fraction form
    634,008.66/875,021.58 = 392,369.10/x
  3. Step 3: Cross multiply
    634,008.66x = 875,021.58 × 392,369.10
  4. Step 4: Simplify right side
    634,008.66x = 343,331,429,825.18
  5. Step 5: Solve for x
    x = 343,331,429,825.18/634,008.66
  6. Step 6: Final answer
    x = 541,524.83

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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.