Home / 631,899.54-872,021.43-345,420.81

Finding the Fourth Proportional to 631,899.54, 872,021.43 and 345,420.81

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Solution

The fourth proportional to 631,899.54, 872,021.43 and 345,420.81 is: 476,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,899.54 : 872,021.43 = 345,420.81 : x
  2. Step 2: Convert to fraction form
    631,899.54/872,021.43 = 345,420.81/x
  3. Step 3: Cross multiply
    631,899.54x = 872,021.43 × 345,420.81
  4. Step 4: Simplify right side
    631,899.54x = 301,214,348,687.96
  5. Step 5: Solve for x
    x = 301,214,348,687.96/631,899.54
  6. Step 6: Final answer
    x = 476,680.75

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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.