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Finding the Fourth Proportional to 636,111.70, 877,832.85 and 349,630.90

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Solution

The fourth proportional to 636,111.70, 877,832.85 and 349,630.90 is: 482,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,111.70 : 877,832.85 = 349,630.90 : x
  2. Step 2: Convert to fraction form
    636,111.70/877,832.85 = 349,630.90/x
  3. Step 3: Cross multiply
    636,111.70x = 877,832.85 × 349,630.90
  4. Step 4: Simplify right side
    636,111.70x = 306,917,489,395.07
  5. Step 5: Solve for x
    x = 306,917,489,395.07/636,111.70
  6. Step 6: Final answer
    x = 482,489.93

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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.