Home / 487,664.91-672,981.62-283,833.78

Finding the Fourth Proportional to 487,664.91, 672,981.62 and 283,833.78

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Solution

The fourth proportional to 487,664.91, 672,981.62 and 283,833.78 is: 391,692.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,664.91 : 672,981.62 = 283,833.78 : x
  2. Step 2: Convert to fraction form
    487,664.91/672,981.62 = 283,833.78/x
  3. Step 3: Cross multiply
    487,664.91x = 672,981.62 × 283,833.78
  4. Step 4: Simplify right side
    487,664.91x = 191,014,915,655.96
  5. Step 5: Solve for x
    x = 191,014,915,655.96/487,664.91
  6. Step 6: Final answer
    x = 391,692.97

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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.