Home / 620,822.60-931,015.20-221,476.40

Finding the Fourth Proportional to 620,822.60, 931,015.20 and 221,476.40

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Solution

The fourth proportional to 620,822.60, 931,015.20 and 221,476.40 is: 332,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,822.60 : 931,015.20 = 221,476.40 : x
  2. Step 2: Convert to fraction form
    620,822.60/931,015.20 = 221,476.40/x
  3. Step 3: Cross multiply
    620,822.60x = 931,015.20 × 221,476.40
  4. Step 4: Simplify right side
    620,822.60x = 206,197,894,841.28
  5. Step 5: Solve for x
    x = 206,197,894,841.28/620,822.60
  6. Step 6: Final answer
    x = 332,136.58

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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.