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Finding the Fourth Proportional to 700,679.31, 966,937.41 and 378,389.40

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Solution

The fourth proportional to 700,679.31, 966,937.41 and 378,389.40 is: 522,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,679.31 : 966,937.41 = 378,389.40 : x
  2. Step 2: Convert to fraction form
    700,679.31/966,937.41 = 378,389.40/x
  3. Step 3: Cross multiply
    700,679.31x = 966,937.41 × 378,389.40
  4. Step 4: Simplify right side
    700,679.31x = 365,878,859,680.82
  5. Step 5: Solve for x
    x = 365,878,859,680.82/700,679.31
  6. Step 6: Final answer
    x = 522,177.35

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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.