Home / 420,861,010.20-631,291,515.30-413,686,556.70

Finding the Fourth Proportional to 420,861,010.20, 631,291,515.30 and 413,686,556.70

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Solution

The fourth proportional to 420,861,010.20, 631,291,515.30 and 413,686,556.70 is: 620,529,835.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,861,010.20 : 631,291,515.30 = 413,686,556.70 : x
  2. Step 2: Convert to fraction form
    420,861,010.20/631,291,515.30 = 413,686,556.70/x
  3. Step 3: Cross multiply
    420,861,010.20x = 631,291,515.30 × 413,686,556.70
  4. Step 4: Simplify right side
    420,861,010.20x = 261,156,813,238,382,336
  5. Step 5: Solve for x
    x = 261,156,813,238,382,336/420,861,010.20
  6. Step 6: Final answer
    x = 620,529,835.05

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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.