Home / 1,143,385.46-1,577,861.19-627,128.78

Finding the Fourth Proportional to 1,143,385.46, 1,577,861.19 and 627,128.78

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Solution

The fourth proportional to 1,143,385.46, 1,577,861.19 and 627,128.78 is: 865,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,385.46 : 1,577,861.19 = 627,128.78 : x
  2. Step 2: Convert to fraction form
    1,143,385.46/1,577,861.19 = 627,128.78/x
  3. Step 3: Cross multiply
    1,143,385.46x = 1,577,861.19 × 627,128.78
  4. Step 4: Simplify right side
    1,143,385.46x = 989,522,163,094.05
  5. Step 5: Solve for x
    x = 989,522,163,094.05/1,143,385.46
  6. Step 6: Final answer
    x = 865,431.82

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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.