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Finding the Fourth Proportional to 629,673.84, 868,980.64 and 354,118.40

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Solution

The fourth proportional to 629,673.84, 868,980.64 and 354,118.40 is: 488,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,673.84 : 868,980.64 = 354,118.40 : x
  2. Step 2: Convert to fraction form
    629,673.84/868,980.64 = 354,118.40/x
  3. Step 3: Cross multiply
    629,673.84x = 868,980.64 × 354,118.40
  4. Step 4: Simplify right side
    629,673.84x = 307,722,033,867.78
  5. Step 5: Solve for x
    x = 307,722,033,867.78/629,673.84
  6. Step 6: Final answer
    x = 488,700.68

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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.