Home / 1,101,008-1,519,393.60-642,437.84

Finding the Fourth Proportional to 1,101,008, 1,519,393.60 and 642,437.84

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Solution

The fourth proportional to 1,101,008, 1,519,393.60 and 642,437.84 is: 886,565.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101,008 : 1,519,393.60 = 642,437.84 : x
  2. Step 2: Convert to fraction form
    1,101,008/1,519,393.60 = 642,437.84/x
  3. Step 3: Cross multiply
    1,101,008x = 1,519,393.60 × 642,437.84
  4. Step 4: Simplify right side
    1,101,008x = 976,115,942,493.82
  5. Step 5: Solve for x
    x = 976,115,942,493.82/1,101,008
  6. Step 6: Final answer
    x = 886,565.71

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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.