Home / 728,117.78-1,004,807.19-405,848.31

Finding the Fourth Proportional to 728,117.78, 1,004,807.19 and 405,848.31

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Solution

The fourth proportional to 728,117.78, 1,004,807.19 and 405,848.31 is: 560,073.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,117.78 : 1,004,807.19 = 405,848.31 : x
  2. Step 2: Convert to fraction form
    728,117.78/1,004,807.19 = 405,848.31/x
  3. Step 3: Cross multiply
    728,117.78x = 1,004,807.19 × 405,848.31
  4. Step 4: Simplify right side
    728,117.78x = 407,799,297,691.25
  5. Step 5: Solve for x
    x = 407,799,297,691.25/728,117.78
  6. Step 6: Final answer
    x = 560,073.26

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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.