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Finding the Fourth Proportional to 634,005.72, 874,938.48 and 343,626.59

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Solution

The fourth proportional to 634,005.72, 874,938.48 and 343,626.59 is: 474,210.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,005.72 : 874,938.48 = 343,626.59 : x
  2. Step 2: Convert to fraction form
    634,005.72/874,938.48 = 343,626.59/x
  3. Step 3: Cross multiply
    634,005.72x = 874,938.48 × 343,626.59
  4. Step 4: Simplify right side
    634,005.72x = 300,652,121,967.49
  5. Step 5: Solve for x
    x = 300,652,121,967.49/634,005.72
  6. Step 6: Final answer
    x = 474,210.43

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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.