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Finding the Fourth Proportional to 547,419.26, 755,440.37 and 305,710.81

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Solution

The fourth proportional to 547,419.26, 755,440.37 and 305,710.81 is: 421,881.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,419.26 : 755,440.37 = 305,710.81 : x
  2. Step 2: Convert to fraction form
    547,419.26/755,440.37 = 305,710.81/x
  3. Step 3: Cross multiply
    547,419.26x = 755,440.37 × 305,710.81
  4. Step 4: Simplify right side
    547,419.26x = 230,946,286,868.28
  5. Step 5: Solve for x
    x = 230,946,286,868.28/547,419.26
  6. Step 6: Final answer
    x = 421,881.92

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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.