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Finding the Fourth Proportional to 702,694.20, 969,717.80 and 380,404.06

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Solution

The fourth proportional to 702,694.20, 969,717.80 and 380,404.06 is: 524,957.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,694.20 : 969,717.80 = 380,404.06 : x
  2. Step 2: Convert to fraction form
    702,694.20/969,717.80 = 380,404.06/x
  3. Step 3: Cross multiply
    702,694.20x = 969,717.80 × 380,404.06
  4. Step 4: Simplify right side
    702,694.20x = 368,884,588,174.27
  5. Step 5: Solve for x
    x = 368,884,588,174.27/702,694.20
  6. Step 6: Final answer
    x = 524,957.50

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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.