Home / 728,275.79-1,005,080.42-401,652.68

Finding the Fourth Proportional to 728,275.79, 1,005,080.42 and 401,652.68

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Solution

The fourth proportional to 728,275.79, 1,005,080.42 and 401,652.68 is: 554,313.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,275.79 : 1,005,080.42 = 401,652.68 : x
  2. Step 2: Convert to fraction form
    728,275.79/1,005,080.42 = 401,652.68/x
  3. Step 3: Cross multiply
    728,275.79x = 1,005,080.42 × 401,652.68
  4. Step 4: Simplify right side
    728,275.79x = 403,693,241,797.01
  5. Step 5: Solve for x
    x = 403,693,241,797.01/728,275.79
  6. Step 6: Final answer
    x = 554,313.69

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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.