Home / 856,469.10-1,284,703.65-257,522.70

Finding the Fourth Proportional to 856,469.10, 1,284,703.65 and 257,522.70

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Solution

The fourth proportional to 856,469.10, 1,284,703.65 and 257,522.70 is: 386,284.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,469.10 : 1,284,703.65 = 257,522.70 : x
  2. Step 2: Convert to fraction form
    856,469.10/1,284,703.65 = 257,522.70/x
  3. Step 3: Cross multiply
    856,469.10x = 1,284,703.65 × 257,522.70
  4. Step 4: Simplify right side
    856,469.10x = 330,840,352,647.86
  5. Step 5: Solve for x
    x = 330,840,352,647.86/856,469.10
  6. Step 6: Final answer
    x = 386,284.05

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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.