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Finding the Fourth Proportional to 702,279.81, 969,139.24 and 379,982.84

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Solution

The fourth proportional to 702,279.81, 969,139.24 and 379,982.84 is: 524,372.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,279.81 : 969,139.24 = 379,982.84 : x
  2. Step 2: Convert to fraction form
    702,279.81/969,139.24 = 379,982.84/x
  3. Step 3: Cross multiply
    702,279.81x = 969,139.24 × 379,982.84
  4. Step 4: Simplify right side
    702,279.81x = 368,256,274,974.99
  5. Step 5: Solve for x
    x = 368,256,274,974.99/702,279.81
  6. Step 6: Final answer
    x = 524,372.58

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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.