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Finding the Fourth Proportional to 636,258, 878,041.44 and 349,771.80

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Solution

The fourth proportional to 636,258, 878,041.44 and 349,771.80 is: 482,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,258 : 878,041.44 = 349,771.80 : x
  2. Step 2: Convert to fraction form
    636,258/878,041.44 = 349,771.80/x
  3. Step 3: Cross multiply
    636,258x = 878,041.44 × 349,771.80
  4. Step 4: Simplify right side
    636,258x = 307,114,134,943.39
  5. Step 5: Solve for x
    x = 307,114,134,943.39/636,258
  6. Step 6: Final answer
    x = 482,688.05

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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.