Home / 1,128,222,540.72-1,691,443,766.88-712,823,790.30

Finding the Fourth Proportional to 1,128,222,540.72, 1,691,443,766.88 and 712,823,790.30

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Solution

The fourth proportional to 1,128,222,540.72, 1,691,443,766.88 and 712,823,790.30 is: 1,068,673,345.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,222,540.72 : 1,691,443,766.88 = 712,823,790.30 : x
  2. Step 2: Convert to fraction form
    1,128,222,540.72/1,691,443,766.88 = 712,823,790.30/x
  3. Step 3: Cross multiply
    1,128,222,540.72x = 1,691,443,766.88 × 712,823,790.30
  4. Step 4: Simplify right side
    1,128,222,540.72x = 1,205,701,356,986,711,296
  5. Step 5: Solve for x
    x = 1,205,701,356,986,711,296/1,128,222,540.72
  6. Step 6: Final answer
    x = 1,068,673,345.44

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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.