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Finding the Fourth Proportional to 629,015.68, 868,033 and 357,081.20

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Solution

The fourth proportional to 629,015.68, 868,033 and 357,081.20 is: 492,767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,015.68 : 868,033 = 357,081.20 : x
  2. Step 2: Convert to fraction form
    629,015.68/868,033 = 357,081.20/x
  3. Step 3: Cross multiply
    629,015.68x = 868,033 × 357,081.20
  4. Step 4: Simplify right side
    629,015.68x = 309,958,265,279.60
  5. Step 5: Solve for x
    x = 309,958,265,279.60/629,015.68
  6. Step 6: Final answer
    x = 492,767.15

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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.