Home / 811,704.96-1,120,329.40-472,217.76

Finding the Fourth Proportional to 811,704.96, 1,120,329.40 and 472,217.76

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Solution

The fourth proportional to 811,704.96, 1,120,329.40 and 472,217.76 is: 651,763.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,704.96 : 1,120,329.40 = 472,217.76 : x
  2. Step 2: Convert to fraction form
    811,704.96/1,120,329.40 = 472,217.76/x
  3. Step 3: Cross multiply
    811,704.96x = 1,120,329.40 × 472,217.76
  4. Step 4: Simplify right side
    811,704.96x = 529,039,439,730.14
  5. Step 5: Solve for x
    x = 529,039,439,730.14/811,704.96
  6. Step 6: Final answer
    x = 651,763.22

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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.