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Finding the Fourth Proportional to 520,308.80, 780,620.40 and 246,964.80

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Solution

The fourth proportional to 520,308.80, 780,620.40 and 246,964.80 is: 370,521.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,308.80 : 780,620.40 = 246,964.80 : x
  2. Step 2: Convert to fraction form
    520,308.80/780,620.40 = 246,964.80/x
  3. Step 3: Cross multiply
    520,308.80x = 780,620.40 × 246,964.80
  4. Step 4: Simplify right side
    520,308.80x = 192,785,760,961.92
  5. Step 5: Solve for x
    x = 192,785,760,961.92/520,308.80
  6. Step 6: Final answer
    x = 370,521.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.