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Finding the Fourth Proportional to 702,912.79, 970,024.30 and 380,622.87

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Solution

The fourth proportional to 702,912.79, 970,024.30 and 380,622.87 is: 525,262.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,912.79 : 970,024.30 = 380,622.87 : x
  2. Step 2: Convert to fraction form
    702,912.79/970,024.30 = 380,622.87/x
  3. Step 3: Cross multiply
    702,912.79x = 970,024.30 × 380,622.87
  4. Step 4: Simplify right side
    702,912.79x = 369,213,433,035.74
  5. Step 5: Solve for x
    x = 369,213,433,035.74/702,912.79
  6. Step 6: Final answer
    x = 525,262.08

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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.