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Finding the Fourth Proportional to 684,450.72, 1,025,820.72 and 329,369.40

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Solution

The fourth proportional to 684,450.72, 1,025,820.72 and 329,369.40 is: 493,642.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,450.72 : 1,025,820.72 = 329,369.40 : x
  2. Step 2: Convert to fraction form
    684,450.72/1,025,820.72 = 329,369.40/x
  3. Step 3: Cross multiply
    684,450.72x = 1,025,820.72 × 329,369.40
  4. Step 4: Simplify right side
    684,450.72x = 337,873,955,053.97
  5. Step 5: Solve for x
    x = 337,873,955,053.97/684,450.72
  6. Step 6: Final answer
    x = 493,642.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.