Home / 688,403.91-1,032,372.99-261,838.47

Finding the Fourth Proportional to 688,403.91, 1,032,372.99 and 261,838.47

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Solution

The fourth proportional to 688,403.91, 1,032,372.99 and 261,838.47 is: 392,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,403.91 : 1,032,372.99 = 261,838.47 : x
  2. Step 2: Convert to fraction form
    688,403.91/1,032,372.99 = 261,838.47/x
  3. Step 3: Cross multiply
    688,403.91x = 1,032,372.99 × 261,838.47
  4. Step 4: Simplify right side
    688,403.91x = 270,314,964,170.93
  5. Step 5: Solve for x
    x = 270,314,964,170.93/688,403.91
  6. Step 6: Final answer
    x = 392,669.13

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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.