Home / 1,128,222,541.72-1,691,443,768.38-712,823,791.30

Finding the Fourth Proportional to 1,128,222,541.72, 1,691,443,768.38 and 712,823,791.30

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Solution

The fourth proportional to 1,128,222,541.72, 1,691,443,768.38 and 712,823,791.30 is: 1,068,673,346.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,222,541.72 : 1,691,443,768.38 = 712,823,791.30 : x
  2. Step 2: Convert to fraction form
    1,128,222,541.72/1,691,443,768.38 = 712,823,791.30/x
  3. Step 3: Cross multiply
    1,128,222,541.72x = 1,691,443,768.38 × 712,823,791.30
  4. Step 4: Simplify right side
    1,128,222,541.72x = 1,205,701,359,747,390,720
  5. Step 5: Solve for x
    x = 1,205,701,359,747,390,720/1,128,222,541.72
  6. Step 6: Final answer
    x = 1,068,673,346.93

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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.