Home / 761,425.94-1,142,141.49-192,806.78

Finding the Fourth Proportional to 761,425.94, 1,142,141.49 and 192,806.78

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Solution

The fourth proportional to 761,425.94, 1,142,141.49 and 192,806.78 is: 289,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,425.94 : 1,142,141.49 = 192,806.78 : x
  2. Step 2: Convert to fraction form
    761,425.94/1,142,141.49 = 192,806.78/x
  3. Step 3: Cross multiply
    761,425.94x = 1,142,141.49 × 192,806.78
  4. Step 4: Simplify right side
    761,425.94x = 220,212,617,280.60
  5. Step 5: Solve for x
    x = 220,212,617,280.60/761,425.94
  6. Step 6: Final answer
    x = 289,210.81

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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.