Home / 1,128,222,542.72-1,691,443,769.88-712,823,792.30

Finding the Fourth Proportional to 1,128,222,542.72, 1,691,443,769.88 and 712,823,792.30

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Solution

The fourth proportional to 1,128,222,542.72, 1,691,443,769.88 and 712,823,792.30 is: 1,068,673,348.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,222,542.72 : 1,691,443,769.88 = 712,823,792.30 : x
  2. Step 2: Convert to fraction form
    1,128,222,542.72/1,691,443,769.88 = 712,823,792.30/x
  3. Step 3: Cross multiply
    1,128,222,542.72x = 1,691,443,769.88 × 712,823,792.30
  4. Step 4: Simplify right side
    1,128,222,542.72x = 1,205,701,362,508,070,144
  5. Step 5: Solve for x
    x = 1,205,701,362,508,070,144/1,128,222,542.72
  6. Step 6: Final answer
    x = 1,068,673,348.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.