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Finding the Fourth Proportional to 636,458.04, 878,315.22 and 349,996.68

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Solution

The fourth proportional to 636,458.04, 878,315.22 and 349,996.68 is: 482,997.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,458.04 : 878,315.22 = 349,996.68 : x
  2. Step 2: Convert to fraction form
    636,458.04/878,315.22 = 349,996.68/x
  3. Step 3: Cross multiply
    636,458.04x = 878,315.22 × 349,996.68
  4. Step 4: Simplify right side
    636,458.04x = 307,407,410,993.47
  5. Step 5: Solve for x
    x = 307,407,410,993.47/636,458.04
  6. Step 6: Final answer
    x = 482,997.14

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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.