Home / 1,386,361.17-1,913,180.31-842,352.21

Finding the Fourth Proportional to 1,386,361.17, 1,913,180.31 and 842,352.21

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Solution

The fourth proportional to 1,386,361.17, 1,913,180.31 and 842,352.21 is: 1,162,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,361.17 : 1,913,180.31 = 842,352.21 : x
  2. Step 2: Convert to fraction form
    1,386,361.17/1,913,180.31 = 842,352.21/x
  3. Step 3: Cross multiply
    1,386,361.17x = 1,913,180.31 × 842,352.21
  4. Step 4: Simplify right side
    1,386,361.17x = 1,611,571,662,256.99
  5. Step 5: Solve for x
    x = 1,611,571,662,256.99/1,386,361.17
  6. Step 6: Final answer
    x = 1,162,447.20

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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.