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Finding the Fourth Proportional to 702,842.56, 969,918.30 and 380,551.66

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Solution

The fourth proportional to 702,842.56, 969,918.30 and 380,551.66 is: 525,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,842.56 : 969,918.30 = 380,551.66 : x
  2. Step 2: Convert to fraction form
    702,842.56/969,918.30 = 380,551.66/x
  3. Step 3: Cross multiply
    702,842.56x = 969,918.30 × 380,551.66
  4. Step 4: Simplify right side
    702,842.56x = 369,104,019,129.38
  5. Step 5: Solve for x
    x = 369,104,019,129.38/702,842.56
  6. Step 6: Final answer
    x = 525,158.89

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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.