Home / 728,361.35-1,005,116.65-401,674.19

Finding the Fourth Proportional to 728,361.35, 1,005,116.65 and 401,674.19

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Solution

The fourth proportional to 728,361.35, 1,005,116.65 and 401,674.19 is: 554,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,361.35 : 1,005,116.65 = 401,674.19 : x
  2. Step 2: Convert to fraction form
    728,361.35/1,005,116.65 = 401,674.19/x
  3. Step 3: Cross multiply
    728,361.35x = 1,005,116.65 × 401,674.19
  4. Step 4: Simplify right side
    728,361.35x = 403,729,414,235.89
  5. Step 5: Solve for x
    x = 403,729,414,235.89/728,361.35
  6. Step 6: Final answer
    x = 554,298.24

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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.