Home / 505,764.10-758,646.15-131,787.10

Finding the Fourth Proportional to 505,764.10, 758,646.15 and 131,787.10

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Solution

The fourth proportional to 505,764.10, 758,646.15 and 131,787.10 is: 197,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,764.10 : 758,646.15 = 131,787.10 : x
  2. Step 2: Convert to fraction form
    505,764.10/758,646.15 = 131,787.10/x
  3. Step 3: Cross multiply
    505,764.10x = 758,646.15 × 131,787.10
  4. Step 4: Simplify right side
    505,764.10x = 99,979,776,034.67
  5. Step 5: Solve for x
    x = 99,979,776,034.67/505,764.10
  6. Step 6: Final answer
    x = 197,680.65

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Double scale
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Similar ratio
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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.