Home / 728,172.96-1,004,837.24-401,420.56

Finding the Fourth Proportional to 728,172.96, 1,004,837.24 and 401,420.56

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Solution

The fourth proportional to 728,172.96, 1,004,837.24 and 401,420.56 is: 553,937.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,172.96 : 1,004,837.24 = 401,420.56 : x
  2. Step 2: Convert to fraction form
    728,172.96/1,004,837.24 = 401,420.56/x
  3. Step 3: Cross multiply
    728,172.96x = 1,004,837.24 × 401,420.56
  4. Step 4: Simplify right side
    728,172.96x = 403,362,327,589.65
  5. Step 5: Solve for x
    x = 403,362,327,589.65/728,172.96
  6. Step 6: Final answer
    x = 553,937.53

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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.