Home / 631,983.20-872,139.89-345,503.29

Finding the Fourth Proportional to 631,983.20, 872,139.89 and 345,503.29

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Solution

The fourth proportional to 631,983.20, 872,139.89 and 345,503.29 is: 476,796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,983.20 : 872,139.89 = 345,503.29 : x
  2. Step 2: Convert to fraction form
    631,983.20/872,139.89 = 345,503.29/x
  3. Step 3: Cross multiply
    631,983.20x = 872,139.89 × 345,503.29
  4. Step 4: Simplify right side
    631,983.20x = 301,327,197,245.76
  5. Step 5: Solve for x
    x = 301,327,197,245.76/631,983.20
  6. Step 6: Final answer
    x = 476,796.21

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Double scale
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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.