Home / 631,985.32-872,142.83-345,505.41

Finding the Fourth Proportional to 631,985.32, 872,142.83 and 345,505.41

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Solution

The fourth proportional to 631,985.32, 872,142.83 and 345,505.41 is: 476,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,985.32 : 872,142.83 = 345,505.41 : x
  2. Step 2: Convert to fraction form
    631,985.32/872,142.83 = 345,505.41/x
  3. Step 3: Cross multiply
    631,985.32x = 872,142.83 × 345,505.41
  4. Step 4: Simplify right side
    631,985.32x = 301,330,066,057.71
  5. Step 5: Solve for x
    x = 301,330,066,057.71/631,985.32
  6. Step 6: Final answer
    x = 476,799.15

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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.