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Finding the Fourth Proportional to 520,451.36, 780,144.96 and 295,336.16

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Solution

The fourth proportional to 520,451.36, 780,144.96 and 295,336.16 is: 442,702.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,451.36 : 780,144.96 = 295,336.16 : x
  2. Step 2: Convert to fraction form
    520,451.36/780,144.96 = 295,336.16/x
  3. Step 3: Cross multiply
    520,451.36x = 780,144.96 × 295,336.16
  4. Step 4: Simplify right side
    520,451.36x = 230,405,016,729.75
  5. Step 5: Solve for x
    x = 230,405,016,729.75/520,451.36
  6. Step 6: Final answer
    x = 442,702.31

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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.