Home / 783,881,523.39-1,081,205,756.12-515,871,965.82

Finding the Fourth Proportional to 783,881,523.39, 1,081,205,756.12 and 515,871,965.82

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Solution

The fourth proportional to 783,881,523.39, 1,081,205,756.12 and 515,871,965.82 is: 711,540,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,881,523.39 : 1,081,205,756.12 = 515,871,965.82 : x
  2. Step 2: Convert to fraction form
    783,881,523.39/1,081,205,756.12 = 515,871,965.82/x
  3. Step 3: Cross multiply
    783,881,523.39x = 1,081,205,756.12 × 515,871,965.82
  4. Step 4: Simplify right side
    783,881,523.39x = 557,763,738,862,944,512
  5. Step 5: Solve for x
    x = 557,763,738,862,944,512/783,881,523.39
  6. Step 6: Final answer
    x = 711,540,867.11

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Double scale
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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.