Home / 643,734.54-888,147.99-371,766.51

Finding the Fourth Proportional to 643,734.54, 888,147.99 and 371,766.51

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Solution

The fourth proportional to 643,734.54, 888,147.99 and 371,766.51 is: 512,919.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,734.54 : 888,147.99 = 371,766.51 : x
  2. Step 2: Convert to fraction form
    643,734.54/888,147.99 = 371,766.51/x
  3. Step 3: Cross multiply
    643,734.54x = 888,147.99 × 371,766.51
  4. Step 4: Simplify right side
    643,734.54x = 330,183,678,605.82
  5. Step 5: Solve for x
    x = 330,183,678,605.82/643,734.54
  6. Step 6: Final answer
    x = 512,919.00

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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.