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Finding the Fourth Proportional to 636,365.64, 878,176.71 and 349,883.22

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Solution

The fourth proportional to 636,365.64, 878,176.71 and 349,883.22 is: 482,834.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,365.64 : 878,176.71 = 349,883.22 : x
  2. Step 2: Convert to fraction form
    636,365.64/878,176.71 = 349,883.22/x
  3. Step 3: Cross multiply
    636,365.64x = 878,176.71 × 349,883.22
  4. Step 4: Simplify right side
    636,365.64x = 307,259,295,023.81
  5. Step 5: Solve for x
    x = 307,259,295,023.81/636,365.64
  6. Step 6: Final answer
    x = 482,834.51

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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.