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Finding the Fourth Proportional to 479,230.80, 718,846.20 and 425,317.20

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Solution

The fourth proportional to 479,230.80, 718,846.20 and 425,317.20 is: 637,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,230.80 : 718,846.20 = 425,317.20 : x
  2. Step 2: Convert to fraction form
    479,230.80/718,846.20 = 425,317.20/x
  3. Step 3: Cross multiply
    479,230.80x = 718,846.20 × 425,317.20
  4. Step 4: Simplify right side
    479,230.80x = 305,737,653,014.64
  5. Step 5: Solve for x
    x = 305,737,653,014.64/479,230.80
  6. Step 6: Final answer
    x = 637,975.80

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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.