Home / 1,008,028.80-1,391,155.20-555,321.60

Finding the Fourth Proportional to 1,008,028.80, 1,391,155.20 and 555,321.60

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Solution

The fourth proportional to 1,008,028.80, 1,391,155.20 and 555,321.60 is: 766,385.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,028.80 : 1,391,155.20 = 555,321.60 : x
  2. Step 2: Convert to fraction form
    1,008,028.80/1,391,155.20 = 555,321.60/x
  3. Step 3: Cross multiply
    1,008,028.80x = 1,391,155.20 × 555,321.60
  4. Step 4: Simplify right side
    1,008,028.80x = 772,538,531,512.32
  5. Step 5: Solve for x
    x = 772,538,531,512.32/1,008,028.80
  6. Step 6: Final answer
    x = 766,385.38

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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.