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Finding the Fourth Proportional to 520,263.56, 780,395.65 and 146,286.56

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Solution

The fourth proportional to 520,263.56, 780,395.65 and 146,286.56 is: 219,429.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,263.56 : 780,395.65 = 146,286.56 : x
  2. Step 2: Convert to fraction form
    520,263.56/780,395.65 = 146,286.56/x
  3. Step 3: Cross multiply
    520,263.56x = 780,395.65 × 146,286.56
  4. Step 4: Simplify right side
    520,263.56x = 114,161,396,662.74
  5. Step 5: Solve for x
    x = 114,161,396,662.74/520,263.56
  6. Step 6: Final answer
    x = 219,429.93

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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.