Home / 856,404.50-1,284,557.34-257,352.80

Finding the Fourth Proportional to 856,404.50, 1,284,557.34 and 257,352.80

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Solution

The fourth proportional to 856,404.50, 1,284,557.34 and 257,352.80 is: 386,014.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,404.50 : 1,284,557.34 = 257,352.80 : x
  2. Step 2: Convert to fraction form
    856,404.50/1,284,557.34 = 257,352.80/x
  3. Step 3: Cross multiply
    856,404.50x = 1,284,557.34 × 257,352.80
  4. Step 4: Simplify right side
    856,404.50x = 330,584,428,209.55
  5. Step 5: Solve for x
    x = 330,584,428,209.55/856,404.50
  6. Step 6: Final answer
    x = 386,014.35

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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.