Home / 728,026.32-1,004,677.11-405,729.12

Finding the Fourth Proportional to 728,026.32, 1,004,677.11 and 405,729.12

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Solution

The fourth proportional to 728,026.32, 1,004,677.11 and 405,729.12 is: 559,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,026.32 : 1,004,677.11 = 405,729.12 : x
  2. Step 2: Convert to fraction form
    728,026.32/1,004,677.11 = 405,729.12/x
  3. Step 3: Cross multiply
    728,026.32x = 1,004,677.11 × 405,729.12
  4. Step 4: Simplify right side
    728,026.32x = 407,626,759,724.44
  5. Step 5: Solve for x
    x = 407,626,759,724.44/728,026.32
  6. Step 6: Final answer
    x = 559,906.62

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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.