Home / 1,380,028.32-1,904,436-776,416.32

Finding the Fourth Proportional to 1,380,028.32, 1,904,436 and 776,416.32

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Solution

The fourth proportional to 1,380,028.32, 1,904,436 and 776,416.32 is: 1,071,452.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,028.32 : 1,904,436 = 776,416.32 : x
  2. Step 2: Convert to fraction form
    1,380,028.32/1,904,436 = 776,416.32/x
  3. Step 3: Cross multiply
    1,380,028.32x = 1,904,436 × 776,416.32
  4. Step 4: Simplify right side
    1,380,028.32x = 1,478,635,190,795.52
  5. Step 5: Solve for x
    x = 1,478,635,190,795.52/1,380,028.32
  6. Step 6: Final answer
    x = 1,071,452.79

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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.