Home / 620,819.40-931,229.10-542,087.40

Finding the Fourth Proportional to 620,819.40, 931,229.10 and 542,087.40

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Solution

The fourth proportional to 620,819.40, 931,229.10 and 542,087.40 is: 813,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,819.40 : 931,229.10 = 542,087.40 : x
  2. Step 2: Convert to fraction form
    620,819.40/931,229.10 = 542,087.40/x
  3. Step 3: Cross multiply
    620,819.40x = 931,229.10 × 542,087.40
  4. Step 4: Simplify right side
    620,819.40x = 504,807,561,623.34
  5. Step 5: Solve for x
    x = 504,807,561,623.34/620,819.40
  6. Step 6: Final answer
    x = 813,131.10

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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.