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Finding the Fourth Proportional to 547,440.86, 755,358.80 and 305,686.23

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Solution

The fourth proportional to 547,440.86, 755,358.80 and 305,686.23 is: 421,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,440.86 : 755,358.80 = 305,686.23 : x
  2. Step 2: Convert to fraction form
    547,440.86/755,358.80 = 305,686.23/x
  3. Step 3: Cross multiply
    547,440.86x = 755,358.80 × 305,686.23
  4. Step 4: Simplify right side
    547,440.86x = 230,902,782,340.89
  5. Step 5: Solve for x
    x = 230,902,782,340.89/547,440.86
  6. Step 6: Final answer
    x = 421,785.81

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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.