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Finding the Fourth Proportional to 636,126.84, 877,856.94 and 349,676.28

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Solution

The fourth proportional to 636,126.84, 877,856.94 and 349,676.28 is: 482,554.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,126.84 : 877,856.94 = 349,676.28 : x
  2. Step 2: Convert to fraction form
    636,126.84/877,856.94 = 349,676.28/x
  3. Step 3: Cross multiply
    636,126.84x = 877,856.94 × 349,676.28
  4. Step 4: Simplify right side
    636,126.84x = 306,965,749,151.38
  5. Step 5: Solve for x
    x = 306,965,749,151.38/636,126.84
  6. Step 6: Final answer
    x = 482,554.31

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1.5x scale

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.