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Finding the Fourth Proportional to 547,392.65, 755,400.38 and 305,673.26

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Solution

The fourth proportional to 547,392.65, 755,400.38 and 305,673.26 is: 421,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,392.65 : 755,400.38 = 305,673.26 : x
  2. Step 2: Convert to fraction form
    547,392.65/755,400.38 = 305,673.26/x
  3. Step 3: Cross multiply
    547,392.65x = 755,400.38 × 305,673.26
  4. Step 4: Simplify right side
    547,392.65x = 230,905,691,454.47
  5. Step 5: Solve for x
    x = 230,905,691,454.47/547,392.65
  6. Step 6: Final answer
    x = 421,828.27

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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.