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Finding the Fourth Proportional to 636,337.42, 878,148.54 and 345,951.81

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Solution

The fourth proportional to 636,337.42, 878,148.54 and 345,951.81 is: 477,415.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,337.42 : 878,148.54 = 345,951.81 : x
  2. Step 2: Convert to fraction form
    636,337.42/878,148.54 = 345,951.81/x
  3. Step 3: Cross multiply
    636,337.42x = 878,148.54 × 345,951.81
  4. Step 4: Simplify right side
    636,337.42x = 303,797,076,861.86
  5. Step 5: Solve for x
    x = 303,797,076,861.86/636,337.42
  6. Step 6: Final answer
    x = 477,415.08

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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.