Home / 1,345,781.49-1,856,128.74-862,391.58

Finding the Fourth Proportional to 1,345,781.49, 1,856,128.74 and 862,391.58

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Solution

The fourth proportional to 1,345,781.49, 1,856,128.74 and 862,391.58 is: 1,189,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,781.49 : 1,856,128.74 = 862,391.58 : x
  2. Step 2: Convert to fraction form
    1,345,781.49/1,856,128.74 = 862,391.58/x
  3. Step 3: Cross multiply
    1,345,781.49x = 1,856,128.74 × 862,391.58
  4. Step 4: Simplify right side
    1,345,781.49x = 1,600,709,796,772.01
  5. Step 5: Solve for x
    x = 1,600,709,796,772.01/1,345,781.49
  6. Step 6: Final answer
    x = 1,189,427.71

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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.