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Finding the Fourth Proportional to 636,005.64, 877,703.94 and 349,533

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Solution

The fourth proportional to 636,005.64, 877,703.94 and 349,533 is: 482,364.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,005.64 : 877,703.94 = 349,533 : x
  2. Step 2: Convert to fraction form
    636,005.64/877,703.94 = 349,533/x
  3. Step 3: Cross multiply
    636,005.64x = 877,703.94 × 349,533
  4. Step 4: Simplify right side
    636,005.64x = 306,786,491,260.02
  5. Step 5: Solve for x
    x = 306,786,491,260.02/636,005.64
  6. Step 6: Final answer
    x = 482,364.42

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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.