Home / 489,381.15-733,834.39-287,043.38

Finding the Fourth Proportional to 489,381.15, 733,834.39 and 287,043.38

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Solution

The fourth proportional to 489,381.15, 733,834.39 and 287,043.38 is: 430,425.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,381.15 : 733,834.39 = 287,043.38 : x
  2. Step 2: Convert to fraction form
    489,381.15/733,834.39 = 287,043.38/x
  3. Step 3: Cross multiply
    489,381.15x = 733,834.39 × 287,043.38
  4. Step 4: Simplify right side
    489,381.15x = 210,642,303,665.84
  5. Step 5: Solve for x
    x = 210,642,303,665.84/489,381.15
  6. Step 6: Final answer
    x = 430,425.86

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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.