Home / 1,681,638.40-2,518,310.40-1,117,619.20

Finding the Fourth Proportional to 1,681,638.40, 2,518,310.40 and 1,117,619.20

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Solution

The fourth proportional to 1,681,638.40, 2,518,310.40 and 1,117,619.20 is: 1,673,672.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,638.40 : 2,518,310.40 = 1,117,619.20 : x
  2. Step 2: Convert to fraction form
    1,681,638.40/2,518,310.40 = 1,117,619.20/x
  3. Step 3: Cross multiply
    1,681,638.40x = 2,518,310.40 × 1,117,619.20
  4. Step 4: Simplify right side
    1,681,638.40x = 2,814,512,054,599.68
  5. Step 5: Solve for x
    x = 2,814,512,054,599.68/1,681,638.40
  6. Step 6: Final answer
    x = 1,673,672.57

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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.