Home / 817,739.91-1,128,480.93-455,155.97

Finding the Fourth Proportional to 817,739.91, 1,128,480.93 and 455,155.97

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Solution

The fourth proportional to 817,739.91, 1,128,480.93 and 455,155.97 is: 628,115.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,739.91 : 1,128,480.93 = 455,155.97 : x
  2. Step 2: Convert to fraction form
    817,739.91/1,128,480.93 = 455,155.97/x
  3. Step 3: Cross multiply
    817,739.91x = 1,128,480.93 × 455,155.97
  4. Step 4: Simplify right side
    817,739.91x = 513,634,826,678.25
  5. Step 5: Solve for x
    x = 513,634,826,678.25/817,739.91
  6. Step 6: Final answer
    x = 628,115.15

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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.