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Finding the Fourth Proportional to 1,239,662,943.09, 1,710,812,232.41 and 682,745,842.53

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Solution

The fourth proportional to 1,239,662,943.09, 1,710,812,232.41 and 682,745,842.53 is: 942,231,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,662,943.09 : 1,710,812,232.41 = 682,745,842.53 : x
  2. Step 2: Convert to fraction form
    1,239,662,943.09/1,710,812,232.41 = 682,745,842.53/x
  3. Step 3: Cross multiply
    1,239,662,943.09x = 1,710,812,232.41 × 682,745,842.53
  4. Step 4: Simplify right side
    1,239,662,943.09x = 1,168,049,939,023,981,824
  5. Step 5: Solve for x
    x = 1,168,049,939,023,981,824/1,239,662,943.09
  6. Step 6: Final answer
    x = 942,231,874.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.