Home / 921,305.92-1,382,696.16-478,200.64

Finding the Fourth Proportional to 921,305.92, 1,382,696.16 and 478,200.64

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Solution

The fourth proportional to 921,305.92, 1,382,696.16 and 478,200.64 is: 717,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,305.92 : 1,382,696.16 = 478,200.64 : x
  2. Step 2: Convert to fraction form
    921,305.92/1,382,696.16 = 478,200.64/x
  3. Step 3: Cross multiply
    921,305.92x = 1,382,696.16 × 478,200.64
  4. Step 4: Simplify right side
    921,305.92x = 661,206,188,637.54
  5. Step 5: Solve for x
    x = 661,206,188,637.54/921,305.92
  6. Step 6: Final answer
    x = 717,683.64

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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.