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Finding the Fourth Proportional to 547,420.26, 755,441.75 and 305,711.81

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Solution

The fourth proportional to 547,420.26, 755,441.75 and 305,711.81 is: 421,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,420.26 : 755,441.75 = 305,711.81 : x
  2. Step 2: Convert to fraction form
    547,420.26/755,441.75 = 305,711.81/x
  3. Step 3: Cross multiply
    547,420.26x = 755,441.75 × 305,711.81
  4. Step 4: Simplify right side
    547,420.26x = 230,947,464,742.07
  5. Step 5: Solve for x
    x = 230,947,464,742.07/547,420.26
  6. Step 6: Final answer
    x = 421,883.30

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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.