Home / 1,010,443,724.20-1,393,890,039.16-639,380,989.18

Finding the Fourth Proportional to 1,010,443,724.20, 1,393,890,039.16 and 639,380,989.18

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Solution

The fourth proportional to 1,010,443,724.20, 1,393,890,039.16 and 639,380,989.18 is: 882,015,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,443,724.20 : 1,393,890,039.16 = 639,380,989.18 : x
  2. Step 2: Convert to fraction form
    1,010,443,724.20/1,393,890,039.16 = 639,380,989.18/x
  3. Step 3: Cross multiply
    1,010,443,724.20x = 1,393,890,039.16 × 639,380,989.18
  4. Step 4: Simplify right side
    1,010,443,724.20x = 891,226,792,046,269,696
  5. Step 5: Solve for x
    x = 891,226,792,046,269,696/1,010,443,724.20
  6. Step 6: Final answer
    x = 882,015,267.85

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Double scale
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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.