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Finding the Fourth Proportional to 670,311.61, 925,049.16 and 408,682.01

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Solution

The fourth proportional to 670,311.61, 925,049.16 and 408,682.01 is: 563,992.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,311.61 : 925,049.16 = 408,682.01 : x
  2. Step 2: Convert to fraction form
    670,311.61/925,049.16 = 408,682.01/x
  3. Step 3: Cross multiply
    670,311.61x = 925,049.16 × 408,682.01
  4. Step 4: Simplify right side
    670,311.61x = 378,050,950,057.61
  5. Step 5: Solve for x
    x = 378,050,950,057.61/670,311.61
  6. Step 6: Final answer
    x = 563,992.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.