Home / 629,657.58-868,947.71-357,720.51

Finding the Fourth Proportional to 629,657.58, 868,947.71 and 357,720.51

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Solution

The fourth proportional to 629,657.58, 868,947.71 and 357,720.51 is: 493,665.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,657.58 : 868,947.71 = 357,720.51 : x
  2. Step 2: Convert to fraction form
    629,657.58/868,947.71 = 357,720.51/x
  3. Step 3: Cross multiply
    629,657.58x = 868,947.71 × 357,720.51
  4. Step 4: Simplify right side
    629,657.58x = 310,840,416,195.93
  5. Step 5: Solve for x
    x = 310,840,416,195.93/629,657.58
  6. Step 6: Final answer
    x = 493,665.81

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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.