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Finding the Fourth Proportional to 702,189.55, 969,021.66 and 379,899.46

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Solution

The fourth proportional to 702,189.55, 969,021.66 and 379,899.46 is: 524,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,189.55 : 969,021.66 = 379,899.46 : x
  2. Step 2: Convert to fraction form
    702,189.55/969,021.66 = 379,899.46/x
  3. Step 3: Cross multiply
    702,189.55x = 969,021.66 × 379,899.46
  4. Step 4: Simplify right side
    702,189.55x = 368,130,805,362.30
  5. Step 5: Solve for x
    x = 368,130,805,362.30/702,189.55
  6. Step 6: Final answer
    x = 524,261.30

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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.