Home / 728,235.90-1,004,969.43-405,943.38

Finding the Fourth Proportional to 728,235.90, 1,004,969.43 and 405,943.38

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Solution

The fourth proportional to 728,235.90, 1,004,969.43 and 405,943.38 is: 560,204.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,235.90 : 1,004,969.43 = 405,943.38 : x
  2. Step 2: Convert to fraction form
    728,235.90/1,004,969.43 = 405,943.38/x
  3. Step 3: Cross multiply
    728,235.90x = 1,004,969.43 × 405,943.38
  4. Step 4: Simplify right side
    728,235.90x = 407,960,687,210.87
  5. Step 5: Solve for x
    x = 407,960,687,210.87/728,235.90
  6. Step 6: Final answer
    x = 560,204.03

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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.