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Finding the Fourth Proportional to 470,521.80, 705,782.70 and 321,222.60

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Solution

The fourth proportional to 470,521.80, 705,782.70 and 321,222.60 is: 481,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,521.80 : 705,782.70 = 321,222.60 : x
  2. Step 2: Convert to fraction form
    470,521.80/705,782.70 = 321,222.60/x
  3. Step 3: Cross multiply
    470,521.80x = 705,782.70 × 321,222.60
  4. Step 4: Simplify right side
    470,521.80x = 226,713,353,929.02
  5. Step 5: Solve for x
    x = 226,713,353,929.02/470,521.80
  6. Step 6: Final answer
    x = 481,833.90

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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.