Home / 728,099.73-1,004,782.31-405,830.30

Finding the Fourth Proportional to 728,099.73, 1,004,782.31 and 405,830.30

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Solution

The fourth proportional to 728,099.73, 1,004,782.31 and 405,830.30 is: 560,048.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,099.73 : 1,004,782.31 = 405,830.30 : x
  2. Step 2: Convert to fraction form
    728,099.73/1,004,782.31 = 405,830.30/x
  3. Step 3: Cross multiply
    728,099.73x = 1,004,782.31 × 405,830.30
  4. Step 4: Simplify right side
    728,099.73x = 407,771,099,248.93
  5. Step 5: Solve for x
    x = 407,771,099,248.93/728,099.73
  6. Step 6: Final answer
    x = 560,048.41

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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.