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Finding the Fourth Proportional to 1,787,713.30, 2,681,569.95 and 1,077,375.70

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Solution

The fourth proportional to 1,787,713.30, 2,681,569.95 and 1,077,375.70 is: 1,616,063.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,713.30 : 2,681,569.95 = 1,077,375.70 : x
  2. Step 2: Convert to fraction form
    1,787,713.30/2,681,569.95 = 1,077,375.70/x
  3. Step 3: Cross multiply
    1,787,713.30x = 2,681,569.95 × 1,077,375.70
  4. Step 4: Simplify right side
    1,787,713.30x = 2,889,058,301,980.22
  5. Step 5: Solve for x
    x = 2,889,058,301,980.22/1,787,713.30
  6. Step 6: Final answer
    x = 1,616,063.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.