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Finding the Fourth Proportional to 631,763.30, 871,833.39 and 345,283.39

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Solution

The fourth proportional to 631,763.30, 871,833.39 and 345,283.39 is: 476,491.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,763.30 : 871,833.39 = 345,283.39 : x
  2. Step 2: Convert to fraction form
    631,763.30/871,833.39 = 345,283.39/x
  3. Step 3: Cross multiply
    631,763.30x = 871,833.39 × 345,283.39
  4. Step 4: Simplify right side
    631,763.30x = 301,029,582,328.81
  5. Step 5: Solve for x
    x = 301,029,582,328.81/631,763.30
  6. Step 6: Final answer
    x = 476,491.09

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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.