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Finding the Fourth Proportional to 631,903.58, 872,022.51 and 345,424.35

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Solution

The fourth proportional to 631,903.58, 872,022.51 and 345,424.35 is: 476,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,903.58 : 872,022.51 = 345,424.35 : x
  2. Step 2: Convert to fraction form
    631,903.58/872,022.51 = 345,424.35/x
  3. Step 3: Cross multiply
    631,903.58x = 872,022.51 × 345,424.35
  4. Step 4: Simplify right side
    631,903.58x = 301,217,807,067.08
  5. Step 5: Solve for x
    x = 301,217,807,067.08/631,903.58
  6. Step 6: Final answer
    x = 476,683.18

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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.