Home / 853,076,721.30-1,279,615,081.95-724,255,422.90

Finding the Fourth Proportional to 853,076,721.30, 1,279,615,081.95 and 724,255,422.90

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Solution

The fourth proportional to 853,076,721.30, 1,279,615,081.95 and 724,255,422.90 is: 1,086,383,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,076,721.30 : 1,279,615,081.95 = 724,255,422.90 : x
  2. Step 2: Convert to fraction form
    853,076,721.30/1,279,615,081.95 = 724,255,422.90/x
  3. Step 3: Cross multiply
    853,076,721.30x = 1,279,615,081.95 × 724,255,422.90
  4. Step 4: Simplify right side
    853,076,721.30x = 926,768,162,326,915,456
  5. Step 5: Solve for x
    x = 926,768,162,326,915,456/853,076,721.30
  6. Step 6: Final answer
    x = 1,086,383,134.35

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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.