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Finding the Fourth Proportional to 520,813.45, 775,528.67 and 501,659.56

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Solution

The fourth proportional to 520,813.45, 775,528.67 and 501,659.56 is: 747,007.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,813.45 : 775,528.67 = 501,659.56 : x
  2. Step 2: Convert to fraction form
    520,813.45/775,528.67 = 501,659.56/x
  3. Step 3: Cross multiply
    520,813.45x = 775,528.67 × 501,659.56
  4. Step 4: Simplify right side
    520,813.45x = 389,051,364,973.64
  5. Step 5: Solve for x
    x = 389,051,364,973.64/520,813.45
  6. Step 6: Final answer
    x = 747,007.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.