Home / 1,143,384.46-1,577,859.81-627,127.78

Finding the Fourth Proportional to 1,143,384.46, 1,577,859.81 and 627,127.78

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Solution

The fourth proportional to 1,143,384.46, 1,577,859.81 and 627,127.78 is: 865,430.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,384.46 : 1,577,859.81 = 627,127.78 : x
  2. Step 2: Convert to fraction form
    1,143,384.46/1,577,859.81 = 627,127.78/x
  3. Step 3: Cross multiply
    1,143,384.46x = 1,577,859.81 × 627,127.78
  4. Step 4: Simplify right side
    1,143,384.46x = 989,519,719,796.52
  5. Step 5: Solve for x
    x = 989,519,719,796.52/1,143,384.46
  6. Step 6: Final answer
    x = 865,430.44

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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.