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Finding the Fourth Proportional to 578,340.92, 798,135.38 and 320,217.84

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Solution

The fourth proportional to 578,340.92, 798,135.38 and 320,217.84 is: 441,914.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,340.92 : 798,135.38 = 320,217.84 : x
  2. Step 2: Convert to fraction form
    578,340.92/798,135.38 = 320,217.84/x
  3. Step 3: Cross multiply
    578,340.92x = 798,135.38 × 320,217.84
  4. Step 4: Simplify right side
    578,340.92x = 255,577,187,411.18
  5. Step 5: Solve for x
    x = 255,577,187,411.18/578,340.92
  6. Step 6: Final answer
    x = 441,914.41

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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.