Home / 1,312,738,202.78-1,812,136,520.31-817,945,374.14

Finding the Fourth Proportional to 1,312,738,202.78, 1,812,136,520.31 and 817,945,374.14

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Solution

The fourth proportional to 1,312,738,202.78, 1,812,136,520.31 and 817,945,374.14 is: 1,129,112,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,738,202.78 : 1,812,136,520.31 = 817,945,374.14 : x
  2. Step 2: Convert to fraction form
    1,312,738,202.78/1,812,136,520.31 = 817,945,374.14/x
  3. Step 3: Cross multiply
    1,312,738,202.78x = 1,812,136,520.31 × 817,945,374.14
  4. Step 4: Simplify right side
    1,312,738,202.78x = 1,482,228,684,097,720,576
  5. Step 5: Solve for x
    x = 1,482,228,684,097,720,576/1,312,738,202.78
  6. Step 6: Final answer
    x = 1,129,112,172.53

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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.