Home / 439,856.21-606,985-248,873.70

Finding the Fourth Proportional to 439,856.21, 606,985 and 248,873.70

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Solution

The fourth proportional to 439,856.21, 606,985 and 248,873.70 is: 343,436.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,856.21 : 606,985 = 248,873.70 : x
  2. Step 2: Convert to fraction form
    439,856.21/606,985 = 248,873.70/x
  3. Step 3: Cross multiply
    439,856.21x = 606,985 × 248,873.70
  4. Step 4: Simplify right side
    439,856.21x = 151,062,602,794.50
  5. Step 5: Solve for x
    x = 151,062,602,794.50/439,856.21
  6. Step 6: Final answer
    x = 343,436.33

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Half 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.