Home / 1,312,738,200.78-1,812,136,517.55-817,945,372.14

Finding the Fourth Proportional to 1,312,738,200.78, 1,812,136,517.55 and 817,945,372.14

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Solution

The fourth proportional to 1,312,738,200.78, 1,812,136,517.55 and 817,945,372.14 is: 1,129,112,169.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,738,200.78 : 1,812,136,517.55 = 817,945,372.14 : x
  2. Step 2: Convert to fraction form
    1,312,738,200.78/1,812,136,517.55 = 817,945,372.14/x
  3. Step 3: Cross multiply
    1,312,738,200.78x = 1,812,136,517.55 × 817,945,372.14
  4. Step 4: Simplify right side
    1,312,738,200.78x = 1,482,228,678,215,918,336
  5. Step 5: Solve for x
    x = 1,482,228,678,215,918,336/1,312,738,200.78
  6. Step 6: Final answer
    x = 1,129,112,169.76

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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.