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Finding the Fourth Proportional to 516,634.80, 773,569.80 and 328,628.40

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Solution

The fourth proportional to 516,634.80, 773,569.80 and 328,628.40 is: 492,063.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,634.80 : 773,569.80 = 328,628.40 : x
  2. Step 2: Convert to fraction form
    516,634.80/773,569.80 = 328,628.40/x
  3. Step 3: Cross multiply
    516,634.80x = 773,569.80 × 328,628.40
  4. Step 4: Simplify right side
    516,634.80x = 254,217,005,662.32
  5. Step 5: Solve for x
    x = 254,217,005,662.32/516,634.80
  6. Step 6: Final answer
    x = 492,063.26

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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.