Home / 805,186.55-1,207,780.16-378,409.16

Finding the Fourth Proportional to 805,186.55, 1,207,780.16 and 378,409.16

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Solution

The fourth proportional to 805,186.55, 1,207,780.16 and 378,409.16 is: 567,613.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,186.55 : 1,207,780.16 = 378,409.16 : x
  2. Step 2: Convert to fraction form
    805,186.55/1,207,780.16 = 378,409.16/x
  3. Step 3: Cross multiply
    805,186.55x = 1,207,780.16 × 378,409.16
  4. Step 4: Simplify right side
    805,186.55x = 457,035,067,879.32
  5. Step 5: Solve for x
    x = 457,035,067,879.32/805,186.55
  6. Step 6: Final answer
    x = 567,613.89

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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.