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Finding the Fourth Proportional to 700,916.79, 967,264.20 and 378,626.79

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Solution

The fourth proportional to 700,916.79, 967,264.20 and 378,626.79 is: 522,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,916.79 : 967,264.20 = 378,626.79 : x
  2. Step 2: Convert to fraction form
    700,916.79/967,264.20 = 378,626.79/x
  3. Step 3: Cross multiply
    700,916.79x = 967,264.20 × 378,626.79
  4. Step 4: Simplify right side
    700,916.79x = 366,232,139,127.92
  5. Step 5: Solve for x
    x = 366,232,139,127.92/700,916.79
  6. Step 6: Final answer
    x = 522,504.45

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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.