Home / 619,919.11-855,477.21-347,965.66

Finding the Fourth Proportional to 619,919.11, 855,477.21 and 347,965.66

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Solution

The fourth proportional to 619,919.11, 855,477.21 and 347,965.66 is: 480,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,919.11 : 855,477.21 = 347,965.66 : x
  2. Step 2: Convert to fraction form
    619,919.11/855,477.21 = 347,965.66/x
  3. Step 3: Cross multiply
    619,919.11x = 855,477.21 × 347,965.66
  4. Step 4: Simplify right side
    619,919.11x = 297,676,691,992.61
  5. Step 5: Solve for x
    x = 297,676,691,992.61/619,919.11
  6. Step 6: Final answer
    x = 480,186.35

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Double scale
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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.