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Finding the Fourth Proportional to 702,916.79, 970,029.81 and 380,626.88

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Solution

The fourth proportional to 702,916.79, 970,029.81 and 380,626.88 is: 525,267.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,916.79 : 970,029.81 = 380,626.88 : x
  2. Step 2: Convert to fraction form
    702,916.79/970,029.81 = 380,626.88/x
  3. Step 3: Cross multiply
    702,916.79x = 970,029.81 × 380,626.88
  4. Step 4: Simplify right side
    702,916.79x = 369,219,420,087.29
  5. Step 5: Solve for x
    x = 369,219,420,087.29/702,916.79
  6. Step 6: Final answer
    x = 525,267.61

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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.