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Finding the Fourth Proportional to 633,825.42, 874,679.85 and 343,436.76

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Solution

The fourth proportional to 633,825.42, 874,679.85 and 343,436.76 is: 473,943.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,825.42 : 874,679.85 = 343,436.76 : x
  2. Step 2: Convert to fraction form
    633,825.42/874,679.85 = 343,436.76/x
  3. Step 3: Cross multiply
    633,825.42x = 874,679.85 × 343,436.76
  4. Step 4: Simplify right side
    633,825.42x = 300,397,215,170.16
  5. Step 5: Solve for x
    x = 300,397,215,170.16/633,825.42
  6. Step 6: Final answer
    x = 473,943.15

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1.5x scale

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.