Home / 1,188,317.74-1,639,867.32-644,465.53

Finding the Fourth Proportional to 1,188,317.74, 1,639,867.32 and 644,465.53

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Solution

The fourth proportional to 1,188,317.74, 1,639,867.32 and 644,465.53 is: 889,356.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,317.74 : 1,639,867.32 = 644,465.53 : x
  2. Step 2: Convert to fraction form
    1,188,317.74/1,639,867.32 = 644,465.53/x
  3. Step 3: Cross multiply
    1,188,317.74x = 1,639,867.32 × 644,465.53
  4. Step 4: Simplify right side
    1,188,317.74x = 1,056,837,961,513.48
  5. Step 5: Solve for x
    x = 1,056,837,961,513.48/1,188,317.74
  6. Step 6: Final answer
    x = 889,356.38

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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.