Home / 655,918,863.72-905,174,054.82-373,657,121.25

Finding the Fourth Proportional to 655,918,863.72, 905,174,054.82 and 373,657,121.25

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Solution

The fourth proportional to 655,918,863.72, 905,174,054.82 and 373,657,121.25 is: 515,650,258.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,918,863.72 : 905,174,054.82 = 373,657,121.25 : x
  2. Step 2: Convert to fraction form
    655,918,863.72/905,174,054.82 = 373,657,121.25/x
  3. Step 3: Cross multiply
    655,918,863.72x = 905,174,054.82 × 373,657,121.25
  4. Step 4: Simplify right side
    655,918,863.72x = 338,224,731,554,230,912
  5. Step 5: Solve for x
    x = 338,224,731,554,230,912/655,918,863.72
  6. Step 6: Final answer
    x = 515,650,258.38

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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.