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Finding the Fourth Proportional to 520,456.38, 780,684.84 and 146,479.38

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Solution

The fourth proportional to 520,456.38, 780,684.84 and 146,479.38 is: 219,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,456.38 : 780,684.84 = 146,479.38 : x
  2. Step 2: Convert to fraction form
    520,456.38/780,684.84 = 146,479.38/x
  3. Step 3: Cross multiply
    520,456.38x = 780,684.84 × 146,479.38
  4. Step 4: Simplify right side
    520,456.38x = 114,354,231,338.60
  5. Step 5: Solve for x
    x = 114,354,231,338.60/520,456.38
  6. Step 6: Final answer
    x = 219,719.15

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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.