Home / 621,000.15-931,500.23-550,141.35

Finding the Fourth Proportional to 621,000.15, 931,500.23 and 550,141.35

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Solution

The fourth proportional to 621,000.15, 931,500.23 and 550,141.35 is: 825,212.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,000.15 : 931,500.23 = 550,141.35 : x
  2. Step 2: Convert to fraction form
    621,000.15/931,500.23 = 550,141.35/x
  3. Step 3: Cross multiply
    621,000.15x = 931,500.23 × 550,141.35
  4. Step 4: Simplify right side
    621,000.15x = 512,456,791,306.80
  5. Step 5: Solve for x
    x = 512,456,791,306.80/621,000.15
  6. Step 6: Final answer
    x = 825,212.03

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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.