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Finding the Fourth Proportional to 630,469.40, 945,704.10 and 578,859.80

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Solution

The fourth proportional to 630,469.40, 945,704.10 and 578,859.80 is: 868,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,469.40 : 945,704.10 = 578,859.80 : x
  2. Step 2: Convert to fraction form
    630,469.40/945,704.10 = 578,859.80/x
  3. Step 3: Cross multiply
    630,469.40x = 945,704.10 × 578,859.80
  4. Step 4: Simplify right side
    630,469.40x = 547,430,086,185.18
  5. Step 5: Solve for x
    x = 547,430,086,185.18/630,469.40
  6. Step 6: Final answer
    x = 868,289.70

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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.