Home / 651,834.20-978,188.70-385,311.80

Finding the Fourth Proportional to 651,834.20, 978,188.70 and 385,311.80

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Solution

The fourth proportional to 651,834.20, 978,188.70 and 385,311.80 is: 578,226.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,834.20 : 978,188.70 = 385,311.80 : x
  2. Step 2: Convert to fraction form
    651,834.20/978,188.70 = 385,311.80/x
  3. Step 3: Cross multiply
    651,834.20x = 978,188.70 × 385,311.80
  4. Step 4: Simplify right side
    651,834.20x = 376,907,648,736.66
  5. Step 5: Solve for x
    x = 376,907,648,736.66/651,834.20
  6. Step 6: Final answer
    x = 578,226.26

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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.