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Finding the Fourth Proportional to 636,302.77, 878,089.94 and 349,820.35

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Solution

The fourth proportional to 636,302.77, 878,089.94 and 349,820.35 is: 482,747.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,302.77 : 878,089.94 = 349,820.35 : x
  2. Step 2: Convert to fraction form
    636,302.77/878,089.94 = 349,820.35/x
  3. Step 3: Cross multiply
    636,302.77x = 878,089.94 × 349,820.35
  4. Step 4: Simplify right side
    636,302.77x = 307,173,730,142.28
  5. Step 5: Solve for x
    x = 307,173,730,142.28/636,302.77
  6. Step 6: Final answer
    x = 482,747.75

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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.