Home / 986,914.89-1,479,730.82-387,934.65

Finding the Fourth Proportional to 986,914.89, 1,479,730.82 and 387,934.65

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Solution

The fourth proportional to 986,914.89, 1,479,730.82 and 387,934.65 is: 581,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,914.89 : 1,479,730.82 = 387,934.65 : x
  2. Step 2: Convert to fraction form
    986,914.89/1,479,730.82 = 387,934.65/x
  3. Step 3: Cross multiply
    986,914.89x = 1,479,730.82 × 387,934.65
  4. Step 4: Simplify right side
    986,914.89x = 574,038,855,811.24
  5. Step 5: Solve for x
    x = 574,038,855,811.24/986,914.89
  6. Step 6: Final answer
    x = 581,649.81

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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.