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Finding the Fourth Proportional to 694,974.17, 959,011.37 and 388,980.47

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Solution

The fourth proportional to 694,974.17, 959,011.37 and 388,980.47 is: 536,763.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,974.17 : 959,011.37 = 388,980.47 : x
  2. Step 2: Convert to fraction form
    694,974.17/959,011.37 = 388,980.47/x
  3. Step 3: Cross multiply
    694,974.17x = 959,011.37 × 388,980.47
  4. Step 4: Simplify right side
    694,974.17x = 373,036,693,437.94
  5. Step 5: Solve for x
    x = 373,036,693,437.94/694,974.17
  6. Step 6: Final answer
    x = 536,763.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.