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Finding the Fourth Proportional to 526,872.96, 727,084.80 and 288,408.96

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Solution

The fourth proportional to 526,872.96, 727,084.80 and 288,408.96 is: 398,004.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,872.96 : 727,084.80 = 288,408.96 : x
  2. Step 2: Convert to fraction form
    526,872.96/727,084.80 = 288,408.96/x
  3. Step 3: Cross multiply
    526,872.96x = 727,084.80 × 288,408.96
  4. Step 4: Simplify right side
    526,872.96x = 209,697,770,999.81
  5. Step 5: Solve for x
    x = 209,697,770,999.81/526,872.96
  6. Step 6: Final answer
    x = 398,004.43

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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.