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Finding the Fourth Proportional to 455,280.15, 682,920.23 and 455,280.15

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Solution

The fourth proportional to 455,280.15, 682,920.23 and 455,280.15 is: 682,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,280.15 : 682,920.23 = 455,280.15 : x
  2. Step 2: Convert to fraction form
    455,280.15/682,920.23 = 455,280.15/x
  3. Step 3: Cross multiply
    455,280.15x = 682,920.23 × 455,280.15
  4. Step 4: Simplify right side
    455,280.15x = 310,920,022,476.03
  5. Step 5: Solve for x
    x = 310,920,022,476.03/455,280.15
  6. Step 6: Final answer
    x = 682,920.23

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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.