Home / 643,310.58-965,280.26-454,981.19

Finding the Fourth Proportional to 643,310.58, 965,280.26 and 454,981.19

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Solution

The fourth proportional to 643,310.58, 965,280.26 and 454,981.19 is: 682,694.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,310.58 : 965,280.26 = 454,981.19 : x
  2. Step 2: Convert to fraction form
    643,310.58/965,280.26 = 454,981.19/x
  3. Step 3: Cross multiply
    643,310.58x = 965,280.26 × 454,981.19
  4. Step 4: Simplify right side
    643,310.58x = 439,184,364,928.96
  5. Step 5: Solve for x
    x = 439,184,364,928.96/643,310.58
  6. Step 6: Final answer
    x = 682,694.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.