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Finding the Fourth Proportional to 578,342.92, 798,138.14 and 320,219.84

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Solution

The fourth proportional to 578,342.92, 798,138.14 and 320,219.84 is: 441,917.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,342.92 : 798,138.14 = 320,219.84 : x
  2. Step 2: Convert to fraction form
    578,342.92/798,138.14 = 320,219.84/x
  3. Step 3: Cross multiply
    578,342.92x = 798,138.14 × 320,219.84
  4. Step 4: Simplify right side
    578,342.92x = 255,579,667,488.70
  5. Step 5: Solve for x
    x = 255,579,667,488.70/578,342.92
  6. Step 6: Final answer
    x = 441,917.17

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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.