Home / 1,221,061.71-1,831,871.64-422,342.58

Finding the Fourth Proportional to 1,221,061.71, 1,831,871.64 and 422,342.58

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Solution

The fourth proportional to 1,221,061.71, 1,831,871.64 and 422,342.58 is: 633,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,061.71 : 1,831,871.64 = 422,342.58 : x
  2. Step 2: Convert to fraction form
    1,221,061.71/1,831,871.64 = 422,342.58/x
  3. Step 3: Cross multiply
    1,221,061.71x = 1,831,871.64 × 422,342.58
  4. Step 4: Simplify right side
    1,221,061.71x = 773,677,394,666.43
  5. Step 5: Solve for x
    x = 773,677,394,666.43/1,221,061.71
  6. Step 6: Final answer
    x = 633,610.40

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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.