Home / 1,231,916.85-1,699,934.64-687,977.16

Finding the Fourth Proportional to 1,231,916.85, 1,699,934.64 and 687,977.16

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Solution

The fourth proportional to 1,231,916.85, 1,699,934.64 and 687,977.16 is: 949,346.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,916.85 : 1,699,934.64 = 687,977.16 : x
  2. Step 2: Convert to fraction form
    1,231,916.85/1,699,934.64 = 687,977.16/x
  3. Step 3: Cross multiply
    1,231,916.85x = 1,699,934.64 × 687,977.16
  4. Step 4: Simplify right side
    1,231,916.85x = 1,169,516,205,812.82
  5. Step 5: Solve for x
    x = 1,169,516,205,812.82/1,231,916.85
  6. Step 6: Final answer
    x = 949,346.71

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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.