Home / 728,412.14-1,005,268.69-401,789.16

Finding the Fourth Proportional to 728,412.14, 1,005,268.69 and 401,789.16

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Solution

The fourth proportional to 728,412.14, 1,005,268.69 and 401,789.16 is: 554,502.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,412.14 : 1,005,268.69 = 401,789.16 : x
  2. Step 2: Convert to fraction form
    728,412.14/1,005,268.69 = 401,789.16/x
  3. Step 3: Cross multiply
    728,412.14x = 1,005,268.69 × 401,789.16
  4. Step 4: Simplify right side
    728,412.14x = 403,906,063,031.64
  5. Step 5: Solve for x
    x = 403,906,063,031.64/728,412.14
  6. Step 6: Final answer
    x = 554,502.10

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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.