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Finding the Fourth Proportional to 670,713.21, 925,311.09 and 380,263.61

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Solution

The fourth proportional to 670,713.21, 925,311.09 and 380,263.61 is: 524,608.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,713.21 : 925,311.09 = 380,263.61 : x
  2. Step 2: Convert to fraction form
    670,713.21/925,311.09 = 380,263.61/x
  3. Step 3: Cross multiply
    670,713.21x = 925,311.09 × 380,263.61
  4. Step 4: Simplify right side
    670,713.21x = 351,862,139,195.70
  5. Step 5: Solve for x
    x = 351,862,139,195.70/670,713.21
  6. Step 6: Final answer
    x = 524,608.93

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1.5x scale

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.