Home / 1,189,402.56-1,783,728-390,552.48

Finding the Fourth Proportional to 1,189,402.56, 1,783,728 and 390,552.48

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Solution

The fourth proportional to 1,189,402.56, 1,783,728 and 390,552.48 is: 585,705.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,402.56 : 1,783,728 = 390,552.48 : x
  2. Step 2: Convert to fraction form
    1,189,402.56/1,783,728 = 390,552.48/x
  3. Step 3: Cross multiply
    1,189,402.56x = 1,783,728 × 390,552.48
  4. Step 4: Simplify right side
    1,189,402.56x = 696,639,394,045.44
  5. Step 5: Solve for x
    x = 696,639,394,045.44/1,189,402.56
  6. Step 6: Final answer
    x = 585,705.31

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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.