Home / 728,898.67-1,005,873.31-402,214.69

Finding the Fourth Proportional to 728,898.67, 1,005,873.31 and 402,214.69

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Solution

The fourth proportional to 728,898.67, 1,005,873.31 and 402,214.69 is: 555,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,898.67 : 1,005,873.31 = 402,214.69 : x
  2. Step 2: Convert to fraction form
    728,898.67/1,005,873.31 = 402,214.69/x
  3. Step 3: Cross multiply
    728,898.67x = 1,005,873.31 × 402,214.69
  4. Step 4: Simplify right side
    728,898.67x = 404,577,021,623.24
  5. Step 5: Solve for x
    x = 404,577,021,623.24/728,898.67
  6. Step 6: Final answer
    x = 555,052.49

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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.