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Finding the Fourth Proportional to 636,261.68, 878,057.88 and 349,788.98

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Solution

The fourth proportional to 636,261.68, 878,057.88 and 349,788.98 is: 482,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,261.68 : 878,057.88 = 349,788.98 : x
  2. Step 2: Convert to fraction form
    636,261.68/878,057.88 = 349,788.98/x
  3. Step 3: Cross multiply
    636,261.68x = 878,057.88 × 349,788.98
  4. Step 4: Simplify right side
    636,261.68x = 307,134,970,226.16
  5. Step 5: Solve for x
    x = 307,134,970,226.16/636,261.68
  6. Step 6: Final answer
    x = 482,718.01

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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.