Home / 620,623.40-930,935.10-221,277.20

Finding the Fourth Proportional to 620,623.40, 930,935.10 and 221,277.20

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Solution

The fourth proportional to 620,623.40, 930,935.10 and 221,277.20 is: 331,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,623.40 : 930,935.10 = 221,277.20 : x
  2. Step 2: Convert to fraction form
    620,623.40/930,935.10 = 221,277.20/x
  3. Step 3: Cross multiply
    620,623.40x = 930,935.10 × 221,277.20
  4. Step 4: Simplify right side
    620,623.40x = 205,994,712,309.72
  5. Step 5: Solve for x
    x = 205,994,712,309.72/620,623.40
  6. Step 6: Final answer
    x = 331,915.80

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Double scale
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Similar ratio
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1.5x scale

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.