Home / 1,145,378.42-1,580,578.91-636,113.60

Finding the Fourth Proportional to 1,145,378.42, 1,580,578.91 and 636,113.60

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Solution

The fourth proportional to 1,145,378.42, 1,580,578.91 and 636,113.60 is: 877,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,378.42 : 1,580,578.91 = 636,113.60 : x
  2. Step 2: Convert to fraction form
    1,145,378.42/1,580,578.91 = 636,113.60/x
  3. Step 3: Cross multiply
    1,145,378.42x = 1,580,578.91 × 636,113.60
  4. Step 4: Simplify right side
    1,145,378.42x = 1,005,427,737,753.31
  5. Step 5: Solve for x
    x = 1,005,427,737,753.31/1,145,378.42
  6. Step 6: Final answer
    x = 877,812.71

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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.