Home / 817,739.76-1,128,480.91-455,155.84

Finding the Fourth Proportional to 817,739.76, 1,128,480.91 and 455,155.84

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Solution

The fourth proportional to 817,739.76, 1,128,480.91 and 455,155.84 is: 628,115.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,739.76 : 1,128,480.91 = 455,155.84 : x
  2. Step 2: Convert to fraction form
    817,739.76/1,128,480.91 = 455,155.84/x
  3. Step 3: Cross multiply
    817,739.76x = 1,128,480.91 × 455,155.84
  4. Step 4: Simplify right side
    817,739.76x = 513,634,672,555.92
  5. Step 5: Solve for x
    x = 513,634,672,555.92/817,739.76
  6. Step 6: Final answer
    x = 628,115.08

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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.