Home / 621,261.45-930,526.23-513,423.21

Finding the Fourth Proportional to 621,261.45, 930,526.23 and 513,423.21

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Solution

The fourth proportional to 621,261.45, 930,526.23 and 513,423.21 is: 769,005.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,261.45 : 930,526.23 = 513,423.21 : x
  2. Step 2: Convert to fraction form
    621,261.45/930,526.23 = 513,423.21/x
  3. Step 3: Cross multiply
    621,261.45x = 930,526.23 × 513,423.21
  4. Step 4: Simplify right side
    621,261.45x = 477,753,763,995.80
  5. Step 5: Solve for x
    x = 477,753,763,995.80/621,261.45
  6. Step 6: Final answer
    x = 769,005.97

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Double scale
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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.