Home / 528,640,705.25-729,481,466.49-305,636,760.33

Finding the Fourth Proportional to 528,640,705.25, 729,481,466.49 and 305,636,760.33

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Solution

The fourth proportional to 528,640,705.25, 729,481,466.49 and 305,636,760.33 is: 421,754,038.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,640,705.25 : 729,481,466.49 = 305,636,760.33 : x
  2. Step 2: Convert to fraction form
    528,640,705.25/729,481,466.49 = 305,636,760.33/x
  3. Step 3: Cross multiply
    528,640,705.25x = 729,481,466.49 × 305,636,760.33
  4. Step 4: Simplify right side
    528,640,705.25x = 222,956,352,138,781,056
  5. Step 5: Solve for x
    x = 222,956,352,138,781,056/528,640,705.25
  6. Step 6: Final answer
    x = 421,754,038.09

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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.