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Finding the Fourth Proportional to 702,957.45, 970,081.80 and 380,667.90

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Solution

The fourth proportional to 702,957.45, 970,081.80 and 380,667.90 is: 525,321.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,957.45 : 970,081.80 = 380,667.90 : x
  2. Step 2: Convert to fraction form
    702,957.45/970,081.80 = 380,667.90/x
  3. Step 3: Cross multiply
    702,957.45x = 970,081.80 × 380,667.90
  4. Step 4: Simplify right side
    702,957.45x = 369,279,001,634.22
  5. Step 5: Solve for x
    x = 369,279,001,634.22/702,957.45
  6. Step 6: Final answer
    x = 525,321.98

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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.