Home / 999,693.38-1,379,542.56-570,111.77

Finding the Fourth Proportional to 999,693.38, 1,379,542.56 and 570,111.77

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Solution

The fourth proportional to 999,693.38, 1,379,542.56 and 570,111.77 is: 786,734.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,693.38 : 1,379,542.56 = 570,111.77 : x
  2. Step 2: Convert to fraction form
    999,693.38/1,379,542.56 = 570,111.77/x
  3. Step 3: Cross multiply
    999,693.38x = 1,379,542.56 × 570,111.77
  4. Step 4: Simplify right side
    999,693.38x = 786,493,451,982.87
  5. Step 5: Solve for x
    x = 786,493,451,982.87/999,693.38
  6. Step 6: Final answer
    x = 786,734.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.