Home / 381,389.10-526,413.70-260,579.22

Finding the Fourth Proportional to 381,389.10, 526,413.70 and 260,579.22

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Solution

The fourth proportional to 381,389.10, 526,413.70 and 260,579.22 is: 359,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,389.10 : 526,413.70 = 260,579.22 : x
  2. Step 2: Convert to fraction form
    381,389.10/526,413.70 = 260,579.22/x
  3. Step 3: Cross multiply
    381,389.10x = 526,413.70 × 260,579.22
  4. Step 4: Simplify right side
    381,389.10x = 137,172,471,343.31
  5. Step 5: Solve for x
    x = 137,172,471,343.31/381,389.10
  6. Step 6: Final answer
    x = 359,665.42

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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.