Home / 528,660,715.20-729,509,015.52-305,656,704.66

Finding the Fourth Proportional to 528,660,715.20, 729,509,015.52 and 305,656,704.66

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Solution

The fourth proportional to 528,660,715.20, 729,509,015.52 and 305,656,704.66 is: 421,781,523.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,660,715.20 : 729,509,015.52 = 305,656,704.66 : x
  2. Step 2: Convert to fraction form
    528,660,715.20/729,509,015.52 = 305,656,704.66/x
  3. Step 3: Cross multiply
    528,660,715.20x = 729,509,015.52 × 305,656,704.66
  4. Step 4: Simplify right side
    528,660,715.20x = 222,979,321,703,604,000
  5. Step 5: Solve for x
    x = 222,979,321,703,604,000/528,660,715.20
  6. Step 6: Final answer
    x = 421,781,523.18

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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.