Home / 728,174.28-1,004,914.53-405,886.71

Finding the Fourth Proportional to 728,174.28, 1,004,914.53 and 405,886.71

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Solution

The fourth proportional to 728,174.28, 1,004,914.53 and 405,886.71 is: 560,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,174.28 : 1,004,914.53 = 405,886.71 : x
  2. Step 2: Convert to fraction form
    728,174.28/1,004,914.53 = 405,886.71/x
  3. Step 3: Cross multiply
    728,174.28x = 1,004,914.53 × 405,886.71
  4. Step 4: Simplify right side
    728,174.28x = 407,881,452,412.90
  5. Step 5: Solve for x
    x = 407,881,452,412.90/728,174.28
  6. Step 6: Final answer
    x = 560,142.62

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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.