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Finding the Fourth Proportional to 634,006.72, 874,939.86 and 343,627.59

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Solution

The fourth proportional to 634,006.72, 874,939.86 and 343,627.59 is: 474,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,006.72 : 874,939.86 = 343,627.59 : x
  2. Step 2: Convert to fraction form
    634,006.72/874,939.86 = 343,627.59/x
  3. Step 3: Cross multiply
    634,006.72x = 874,939.86 × 343,627.59
  4. Step 4: Simplify right side
    634,006.72x = 300,653,475,486.74
  5. Step 5: Solve for x
    x = 300,653,475,486.74/634,006.72
  6. Step 6: Final answer
    x = 474,211.81

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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.