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Finding the Fourth Proportional to 702,398.21, 969,311.97 and 380,108.22

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Solution

The fourth proportional to 702,398.21, 969,311.97 and 380,108.22 is: 524,550.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,398.21 : 969,311.97 = 380,108.22 : x
  2. Step 2: Convert to fraction form
    702,398.21/969,311.97 = 380,108.22/x
  3. Step 3: Cross multiply
    702,398.21x = 969,311.97 × 380,108.22
  4. Step 4: Simplify right side
    702,398.21x = 368,443,447,541.39
  5. Step 5: Solve for x
    x = 368,443,447,541.39/702,398.21
  6. Step 6: Final answer
    x = 524,550.67

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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.