Home / 1,079,857.08-1,490,490.99-621,021.78

Finding the Fourth Proportional to 1,079,857.08, 1,490,490.99 and 621,021.78

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Solution

The fourth proportional to 1,079,857.08, 1,490,490.99 and 621,021.78 is: 857,175.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,857.08 : 1,490,490.99 = 621,021.78 : x
  2. Step 2: Convert to fraction form
    1,079,857.08/1,490,490.99 = 621,021.78/x
  3. Step 3: Cross multiply
    1,079,857.08x = 1,490,490.99 × 621,021.78
  4. Step 4: Simplify right side
    1,079,857.08x = 925,627,367,683.76
  5. Step 5: Solve for x
    x = 925,627,367,683.76/1,079,857.08
  6. Step 6: Final answer
    x = 857,175.81

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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.