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Finding the Fourth Proportional to 578,875.30, 798,847.13 and 320,768.97

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Solution

The fourth proportional to 578,875.30, 798,847.13 and 320,768.97 is: 442,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,875.30 : 798,847.13 = 320,768.97 : x
  2. Step 2: Convert to fraction form
    578,875.30/798,847.13 = 320,768.97/x
  3. Step 3: Cross multiply
    578,875.30x = 798,847.13 × 320,768.97
  4. Step 4: Simplify right side
    578,875.30x = 256,245,368,883.80
  5. Step 5: Solve for x
    x = 256,245,368,883.80/578,875.30
  6. Step 6: Final answer
    x = 442,660.74

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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.