Home / 853,812.15-1,282,194.45-455,231.40

Finding the Fourth Proportional to 853,812.15, 1,282,194.45 and 455,231.40

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Solution

The fourth proportional to 853,812.15, 1,282,194.45 and 455,231.40 is: 683,634.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,812.15 : 1,282,194.45 = 455,231.40 : x
  2. Step 2: Convert to fraction form
    853,812.15/1,282,194.45 = 455,231.40/x
  3. Step 3: Cross multiply
    853,812.15x = 1,282,194.45 × 455,231.40
  4. Step 4: Simplify right side
    853,812.15x = 583,695,174,545.73
  5. Step 5: Solve for x
    x = 583,695,174,545.73/853,812.15
  6. Step 6: Final answer
    x = 683,634.19

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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.