Home / 728,287.87-1,005,097.08-401,664.77

Finding the Fourth Proportional to 728,287.87, 1,005,097.08 and 401,664.77

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Solution

The fourth proportional to 728,287.87, 1,005,097.08 and 401,664.77 is: 554,330.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,287.87 : 1,005,097.08 = 401,664.77 : x
  2. Step 2: Convert to fraction form
    728,287.87/1,005,097.08 = 401,664.77/x
  3. Step 3: Cross multiply
    728,287.87x = 1,005,097.08 × 401,664.77
  4. Step 4: Simplify right side
    728,287.87x = 403,712,082,944.81
  5. Step 5: Solve for x
    x = 403,712,082,944.81/728,287.87
  6. Step 6: Final answer
    x = 554,330.37

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Double scale
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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.