Home / 528,526,771.20-729,202,394.80-305,427,175.20

Finding the Fourth Proportional to 528,526,771.20, 729,202,394.80 and 305,427,175.20

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Solution

The fourth proportional to 528,526,771.20, 729,202,394.80 and 305,427,175.20 is: 421,394,411.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,526,771.20 : 729,202,394.80 = 305,427,175.20 : x
  2. Step 2: Convert to fraction form
    528,526,771.20/729,202,394.80 = 305,427,175.20/x
  3. Step 3: Cross multiply
    528,526,771.20x = 729,202,394.80 × 305,427,175.20
  4. Step 4: Simplify right side
    528,526,771.20x = 222,718,227,592,839,136
  5. Step 5: Solve for x
    x = 222,718,227,592,839,136/528,526,771.20
  6. Step 6: Final answer
    x = 421,394,411.27

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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.