Home / 685,424.77-946,091.16-443,723.65

Finding the Fourth Proportional to 685,424.77, 946,091.16 and 443,723.65

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Solution

The fourth proportional to 685,424.77, 946,091.16 and 443,723.65 is: 612,471.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424.77 : 946,091.16 = 443,723.65 : x
  2. Step 2: Convert to fraction form
    685,424.77/946,091.16 = 443,723.65/x
  3. Step 3: Cross multiply
    685,424.77x = 946,091.16 × 443,723.65
  4. Step 4: Simplify right side
    685,424.77x = 419,803,020,382.71
  5. Step 5: Solve for x
    x = 419,803,020,382.71/685,424.77
  6. Step 6: Final answer
    x = 612,471.33

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Double scale
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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.