Home / 858,400.20-1,287,600.30-522,100.35

Finding the Fourth Proportional to 858,400.20, 1,287,600.30 and 522,100.35

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Solution

The fourth proportional to 858,400.20, 1,287,600.30 and 522,100.35 is: 783,150.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,400.20 : 1,287,600.30 = 522,100.35 : x
  2. Step 2: Convert to fraction form
    858,400.20/1,287,600.30 = 522,100.35/x
  3. Step 3: Cross multiply
    858,400.20x = 1,287,600.30 × 522,100.35
  4. Step 4: Simplify right side
    858,400.20x = 672,256,567,290.11
  5. Step 5: Solve for x
    x = 672,256,567,290.11/858,400.20
  6. Step 6: Final answer
    x = 783,150.53

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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.