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Finding the Fourth Proportional to 702,960.45, 970,085.94 and 380,670.90

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Solution

The fourth proportional to 702,960.45, 970,085.94 and 380,670.90 is: 525,326.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,960.45 : 970,085.94 = 380,670.90 : x
  2. Step 2: Convert to fraction form
    702,960.45/970,085.94 = 380,670.90/x
  3. Step 3: Cross multiply
    702,960.45x = 970,085.94 × 380,670.90
  4. Step 4: Simplify right side
    702,960.45x = 369,283,487,857.15
  5. Step 5: Solve for x
    x = 369,283,487,857.15/702,960.45
  6. Step 6: Final answer
    x = 525,326.12

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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.