Home / 899,069.70-1,240,718.67-491,175.30

Finding the Fourth Proportional to 899,069.70, 1,240,718.67 and 491,175.30

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Solution

The fourth proportional to 899,069.70, 1,240,718.67 and 491,175.30 is: 677,823.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,069.70 : 1,240,718.67 = 491,175.30 : x
  2. Step 2: Convert to fraction form
    899,069.70/1,240,718.67 = 491,175.30/x
  3. Step 3: Cross multiply
    899,069.70x = 1,240,718.67 × 491,175.30
  4. Step 4: Simplify right side
    899,069.70x = 609,410,364,952.85
  5. Step 5: Solve for x
    x = 609,410,364,952.85/899,069.70
  6. Step 6: Final answer
    x = 677,823.27

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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.