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Finding the Fourth Proportional to 634,378.96, 875,468.24 and 347,909.48

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Solution

The fourth proportional to 634,378.96, 875,468.24 and 347,909.48 is: 480,128.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,378.96 : 875,468.24 = 347,909.48 : x
  2. Step 2: Convert to fraction form
    634,378.96/875,468.24 = 347,909.48/x
  3. Step 3: Cross multiply
    634,378.96x = 875,468.24 × 347,909.48
  4. Step 4: Simplify right side
    634,378.96x = 304,583,700,134.92
  5. Step 5: Solve for x
    x = 304,583,700,134.92/634,378.96
  6. Step 6: Final answer
    x = 480,128.94

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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.