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Finding the Fourth Proportional to 547,527.36, 755,534.40 and 305,790.72

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Solution

The fourth proportional to 547,527.36, 755,534.40 and 305,790.72 is: 421,961.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,527.36 : 755,534.40 = 305,790.72 : x
  2. Step 2: Convert to fraction form
    547,527.36/755,534.40 = 305,790.72/x
  3. Step 3: Cross multiply
    547,527.36x = 755,534.40 × 305,790.72
  4. Step 4: Simplify right side
    547,527.36x = 231,035,408,160.77
  5. Step 5: Solve for x
    x = 231,035,408,160.77/547,527.36
  6. Step 6: Final answer
    x = 421,961.39

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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.