Home / 1,122,020.54-1,548,179.88-638,556.92

Finding the Fourth Proportional to 1,122,020.54, 1,548,179.88 and 638,556.92

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Solution

The fourth proportional to 1,122,020.54, 1,548,179.88 and 638,556.92 is: 881,089.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,020.54 : 1,548,179.88 = 638,556.92 : x
  2. Step 2: Convert to fraction form
    1,122,020.54/1,548,179.88 = 638,556.92/x
  3. Step 3: Cross multiply
    1,122,020.54x = 1,548,179.88 × 638,556.92
  4. Step 4: Simplify right side
    1,122,020.54x = 988,600,975,040.84
  5. Step 5: Solve for x
    x = 988,600,975,040.84/1,122,020.54
  6. Step 6: Final answer
    x = 881,089.91

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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.