Home / 407,054.64-561,086.55-320,873.17

Finding the Fourth Proportional to 407,054.64, 561,086.55 and 320,873.17

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Solution

The fourth proportional to 407,054.64, 561,086.55 and 320,873.17 is: 442,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,054.64 : 561,086.55 = 320,873.17 : x
  2. Step 2: Convert to fraction form
    407,054.64/561,086.55 = 320,873.17/x
  3. Step 3: Cross multiply
    407,054.64x = 561,086.55 × 320,873.17
  4. Step 4: Simplify right side
    407,054.64x = 180,037,619,942.86
  5. Step 5: Solve for x
    x = 180,037,619,942.86/407,054.64
  6. Step 6: Final answer
    x = 442,293.50

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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.