Home / 1,221,097.58-1,831,925.40-422,378.42

Finding the Fourth Proportional to 1,221,097.58, 1,831,925.40 and 422,378.42

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Solution

The fourth proportional to 1,221,097.58, 1,831,925.40 and 422,378.42 is: 633,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,097.58 : 1,831,925.40 = 422,378.42 : x
  2. Step 2: Convert to fraction form
    1,221,097.58/1,831,925.40 = 422,378.42/x
  3. Step 3: Cross multiply
    1,221,097.58x = 1,831,925.40 × 422,378.42
  4. Step 4: Simplify right side
    1,221,097.58x = 773,765,756,009.87
  5. Step 5: Solve for x
    x = 773,765,756,009.87/1,221,097.58
  6. Step 6: Final answer
    x = 633,664.15

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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.