Home / 740,028.87-1,021,242.96-400,497.12

Finding the Fourth Proportional to 740,028.87, 1,021,242.96 and 400,497.12

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Solution

The fourth proportional to 740,028.87, 1,021,242.96 and 400,497.12 is: 552,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,028.87 : 1,021,242.96 = 400,497.12 : x
  2. Step 2: Convert to fraction form
    740,028.87/1,021,242.96 = 400,497.12/x
  3. Step 3: Cross multiply
    740,028.87x = 1,021,242.96 × 400,497.12
  4. Step 4: Simplify right side
    740,028.87x = 409,004,864,300.28
  5. Step 5: Solve for x
    x = 409,004,864,300.28/740,028.87
  6. Step 6: Final answer
    x = 552,687.71

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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.