Home / 717,736.82-990,499.19-411,869.21

Finding the Fourth Proportional to 717,736.82, 990,499.19 and 411,869.21

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Solution

The fourth proportional to 717,736.82, 990,499.19 and 411,869.21 is: 568,392.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,736.82 : 990,499.19 = 411,869.21 : x
  2. Step 2: Convert to fraction form
    717,736.82/990,499.19 = 411,869.21/x
  3. Step 3: Cross multiply
    717,736.82x = 990,499.19 × 411,869.21
  4. Step 4: Simplify right side
    717,736.82x = 407,956,111,879.10
  5. Step 5: Solve for x
    x = 407,956,111,879.10/717,736.82
  6. Step 6: Final answer
    x = 568,392.35

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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.