Home / 1,638,290.88-2,255,696.30-1,392,792.57

Finding the Fourth Proportional to 1,638,290.88, 2,255,696.30 and 1,392,792.57

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Solution

The fourth proportional to 1,638,290.88, 2,255,696.30 and 1,392,792.57 is: 1,917,679.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,290.88 : 2,255,696.30 = 1,392,792.57 : x
  2. Step 2: Convert to fraction form
    1,638,290.88/2,255,696.30 = 1,392,792.57/x
  3. Step 3: Cross multiply
    1,638,290.88x = 2,255,696.30 × 1,392,792.57
  4. Step 4: Simplify right side
    1,638,290.88x = 3,141,717,050,298.47
  5. Step 5: Solve for x
    x = 3,141,717,050,298.47/1,638,290.88
  6. Step 6: Final answer
    x = 1,917,679.63

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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.