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Finding the Fourth Proportional to 700,679.24, 966,937.32 and 378,389.31

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Solution

The fourth proportional to 700,679.24, 966,937.32 and 378,389.31 is: 522,177.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,679.24 : 966,937.32 = 378,389.31 : x
  2. Step 2: Convert to fraction form
    700,679.24/966,937.32 = 378,389.31/x
  3. Step 3: Cross multiply
    700,679.24x = 966,937.32 × 378,389.31
  4. Step 4: Simplify right side
    700,679.24x = 365,878,745,328.05
  5. Step 5: Solve for x
    x = 365,878,745,328.05/700,679.24
  6. Step 6: Final answer
    x = 522,177.23

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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.