Home / 856,511.10-1,284,766.65-257,564.70

Finding the Fourth Proportional to 856,511.10, 1,284,766.65 and 257,564.70

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Solution

The fourth proportional to 856,511.10, 1,284,766.65 and 257,564.70 is: 386,347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,511.10 : 1,284,766.65 = 257,564.70 : x
  2. Step 2: Convert to fraction form
    856,511.10/1,284,766.65 = 257,564.70/x
  3. Step 3: Cross multiply
    856,511.10x = 1,284,766.65 × 257,564.70
  4. Step 4: Simplify right side
    856,511.10x = 330,910,536,777.26
  5. Step 5: Solve for x
    x = 330,910,536,777.26/856,511.10
  6. Step 6: Final answer
    x = 386,347.05

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Similar ratio
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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.