Home / 631,991.32-872,151.11-345,511.42

Finding the Fourth Proportional to 631,991.32, 872,151.11 and 345,511.42

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Solution

The fourth proportional to 631,991.32, 872,151.11 and 345,511.42 is: 476,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,991.32 : 872,151.11 = 345,511.42 : x
  2. Step 2: Convert to fraction form
    631,991.32/872,151.11 = 345,511.42/x
  3. Step 3: Cross multiply
    631,991.32x = 872,151.11 × 345,511.42
  4. Step 4: Simplify right side
    631,991.32x = 301,338,168,470.68
  5. Step 5: Solve for x
    x = 301,338,168,470.68/631,991.32
  6. Step 6: Final answer
    x = 476,807.45

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1.5x scale

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.