Home / 783,881,522.89-1,081,205,755.43-515,871,965.32

Finding the Fourth Proportional to 783,881,522.89, 1,081,205,755.43 and 515,871,965.32

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Solution

The fourth proportional to 783,881,522.89, 1,081,205,755.43 and 515,871,965.32 is: 711,540,866.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,881,522.89 : 1,081,205,755.43 = 515,871,965.32 : x
  2. Step 2: Convert to fraction form
    783,881,522.89/1,081,205,755.43 = 515,871,965.32/x
  3. Step 3: Cross multiply
    783,881,522.89x = 1,081,205,755.43 × 515,871,965.32
  4. Step 4: Simplify right side
    783,881,522.89x = 557,763,737,966,389,952
  5. Step 5: Solve for x
    x = 557,763,737,966,389,952/783,881,522.89
  6. Step 6: Final answer
    x = 711,540,866.42

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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.