Home / 521,379.72-780,746.04-436,917.78

Finding the Fourth Proportional to 521,379.72, 780,746.04 and 436,917.78

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Solution

The fourth proportional to 521,379.72, 780,746.04 and 436,917.78 is: 654,267.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,379.72 : 780,746.04 = 436,917.78 : x
  2. Step 2: Convert to fraction form
    521,379.72/780,746.04 = 436,917.78/x
  3. Step 3: Cross multiply
    521,379.72x = 780,746.04 × 436,917.78
  4. Step 4: Simplify right side
    521,379.72x = 341,121,826,540.59
  5. Step 5: Solve for x
    x = 341,121,826,540.59/521,379.72
  6. Step 6: Final answer
    x = 654,267.54

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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.