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Finding the Fourth Proportional to 553,234.20, 829,851.30 and 478,438.80

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Solution

The fourth proportional to 553,234.20, 829,851.30 and 478,438.80 is: 717,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,234.20 : 829,851.30 = 478,438.80 : x
  2. Step 2: Convert to fraction form
    553,234.20/829,851.30 = 478,438.80/x
  3. Step 3: Cross multiply
    553,234.20x = 829,851.30 × 478,438.80
  4. Step 4: Simplify right side
    553,234.20x = 397,033,060,150.44
  5. Step 5: Solve for x
    x = 397,033,060,150.44/553,234.20
  6. Step 6: Final answer
    x = 717,658.20

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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.