Home / 412,110.82-618,255-127,795.65

Finding the Fourth Proportional to 412,110.82, 618,255 and 127,795.65

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Solution

The fourth proportional to 412,110.82, 618,255 and 127,795.65 is: 191,721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,110.82 : 618,255 = 127,795.65 : x
  2. Step 2: Convert to fraction form
    412,110.82/618,255 = 127,795.65/x
  3. Step 3: Cross multiply
    412,110.82x = 618,255 × 127,795.65
  4. Step 4: Simplify right side
    412,110.82x = 79,010,299,590.75
  5. Step 5: Solve for x
    x = 79,010,299,590.75/412,110.82
  6. Step 6: Final answer
    x = 191,721.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.