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Finding the Fourth Proportional to 634,389.18, 875,468.34 and 347,906.76

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Solution

The fourth proportional to 634,389.18, 875,468.34 and 347,906.76 is: 480,117.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,389.18 : 875,468.34 = 347,906.76 : x
  2. Step 2: Convert to fraction form
    634,389.18/875,468.34 = 347,906.76/x
  3. Step 3: Cross multiply
    634,389.18x = 875,468.34 × 347,906.76
  4. Step 4: Simplify right side
    634,389.18x = 304,581,353,651.98
  5. Step 5: Solve for x
    x = 304,581,353,651.98/634,389.18
  6. Step 6: Final answer
    x = 480,117.51

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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.