Home / 1,010,443,723.20-1,393,890,037.79-639,380,988.18

Finding the Fourth Proportional to 1,010,443,723.20, 1,393,890,037.79 and 639,380,988.18

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Solution

The fourth proportional to 1,010,443,723.20, 1,393,890,037.79 and 639,380,988.18 is: 882,015,266.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,443,723.20 : 1,393,890,037.79 = 639,380,988.18 : x
  2. Step 2: Convert to fraction form
    1,010,443,723.20/1,393,890,037.79 = 639,380,988.18/x
  3. Step 3: Cross multiply
    1,010,443,723.20x = 1,393,890,037.79 × 639,380,988.18
  4. Step 4: Simplify right side
    1,010,443,723.20x = 891,226,789,773,230,848
  5. Step 5: Solve for x
    x = 891,226,789,773,230,848/1,010,443,723.20
  6. Step 6: Final answer
    x = 882,015,266.47

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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.