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Finding the Fourth Proportional to 702,912.60, 970,019.90 and 380,625.24

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Solution

The fourth proportional to 702,912.60, 970,019.90 and 380,625.24 is: 525,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,912.60 : 970,019.90 = 380,625.24 : x
  2. Step 2: Convert to fraction form
    702,912.60/970,019.90 = 380,625.24/x
  3. Step 3: Cross multiply
    702,912.60x = 970,019.90 × 380,625.24
  4. Step 4: Simplify right side
    702,912.60x = 369,214,057,242.28
  5. Step 5: Solve for x
    x = 369,214,057,242.28/702,912.60
  6. Step 6: Final answer
    x = 525,263.11

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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.