Home / 858,416.30-1,287,112.45-526,230.70

Finding the Fourth Proportional to 858,416.30, 1,287,112.45 and 526,230.70

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Solution

The fourth proportional to 858,416.30, 1,287,112.45 and 526,230.70 is: 789,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,416.30 : 1,287,112.45 = 526,230.70 : x
  2. Step 2: Convert to fraction form
    858,416.30/1,287,112.45 = 526,230.70/x
  3. Step 3: Cross multiply
    858,416.30x = 1,287,112.45 × 526,230.70
  4. Step 4: Simplify right side
    858,416.30x = 677,318,085,542.22
  5. Step 5: Solve for x
    x = 677,318,085,542.22/858,416.30
  6. Step 6: Final answer
    x = 789,032.18

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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.