Home / 725,105.32-1,087,890.35-298,840.79

Finding the Fourth Proportional to 725,105.32, 1,087,890.35 and 298,840.79

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Solution

The fourth proportional to 725,105.32, 1,087,890.35 and 298,840.79 is: 448,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,105.32 : 1,087,890.35 = 298,840.79 : x
  2. Step 2: Convert to fraction form
    725,105.32/1,087,890.35 = 298,840.79/x
  3. Step 3: Cross multiply
    725,105.32x = 1,087,890.35 × 298,840.79
  4. Step 4: Simplify right side
    725,105.32x = 325,106,012,852.90
  5. Step 5: Solve for x
    x = 325,106,012,852.90/725,105.32
  6. Step 6: Final answer
    x = 448,356.96

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Double scale
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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.