Home / 2,618,884.47-3,928,492.80-821,838.81

Finding the Fourth Proportional to 2,618,884.47, 3,928,492.80 and 821,838.81

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Solution

The fourth proportional to 2,618,884.47, 3,928,492.80 and 821,838.81 is: 1,232,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618,884.47 : 3,928,492.80 = 821,838.81 : x
  2. Step 2: Convert to fraction form
    2,618,884.47/3,928,492.80 = 821,838.81/x
  3. Step 3: Cross multiply
    2,618,884.47x = 3,928,492.80 × 821,838.81
  4. Step 4: Simplify right side
    2,618,884.47x = 3,228,587,847,845.57
  5. Step 5: Solve for x
    x = 3,228,587,847,845.57/2,618,884.47
  6. Step 6: Final answer
    x = 1,232,810.34

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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.