Home / 939,378.62-1,296,342.58-509,658.78

Finding the Fourth Proportional to 939,378.62, 1,296,342.58 and 509,658.78

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Solution

The fourth proportional to 939,378.62, 1,296,342.58 and 509,658.78 is: 703,329.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,378.62 : 1,296,342.58 = 509,658.78 : x
  2. Step 2: Convert to fraction form
    939,378.62/1,296,342.58 = 509,658.78/x
  3. Step 3: Cross multiply
    939,378.62x = 1,296,342.58 × 509,658.78
  4. Step 4: Simplify right side
    939,378.62x = 660,692,382,327.60
  5. Step 5: Solve for x
    x = 660,692,382,327.60/939,378.62
  6. Step 6: Final answer
    x = 703,329.17

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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.