Home / 860,255.71-1,290,538.78-354,535.65

Finding the Fourth Proportional to 860,255.71, 1,290,538.78 and 354,535.65

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Solution

The fourth proportional to 860,255.71, 1,290,538.78 and 354,535.65 is: 531,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,255.71 : 1,290,538.78 = 354,535.65 : x
  2. Step 2: Convert to fraction form
    860,255.71/1,290,538.78 = 354,535.65/x
  3. Step 3: Cross multiply
    860,255.71x = 1,290,538.78 × 354,535.65
  4. Step 4: Simplify right side
    860,255.71x = 457,542,004,331.17
  5. Step 5: Solve for x
    x = 457,542,004,331.17/860,255.71
  6. Step 6: Final answer
    x = 531,867.44

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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.