Home / 1,391,503,664.70-1,920,160,910.79-819,195,877.26

Finding the Fourth Proportional to 1,391,503,664.70, 1,920,160,910.79 and 819,195,877.26

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Solution

The fourth proportional to 1,391,503,664.70, 1,920,160,910.79 and 819,195,877.26 is: 1,130,423,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,503,664.70 : 1,920,160,910.79 = 819,195,877.26 : x
  2. Step 2: Convert to fraction form
    1,391,503,664.70/1,920,160,910.79 = 819,195,877.26/x
  3. Step 3: Cross multiply
    1,391,503,664.70x = 1,920,160,910.79 × 819,195,877.26
  4. Step 4: Simplify right side
    1,391,503,664.70x = 1,572,987,901,794,974,720
  5. Step 5: Solve for x
    x = 1,572,987,901,794,974,720/1,391,503,664.70
  6. Step 6: Final answer
    x = 1,130,423,111.13

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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.