Home / 920,180.25-1,380,270.38-421,544.25

Finding the Fourth Proportional to 920,180.25, 1,380,270.38 and 421,544.25

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Solution

The fourth proportional to 920,180.25, 1,380,270.38 and 421,544.25 is: 632,316.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,180.25 : 1,380,270.38 = 421,544.25 : x
  2. Step 2: Convert to fraction form
    920,180.25/1,380,270.38 = 421,544.25/x
  3. Step 3: Cross multiply
    920,180.25x = 1,380,270.38 × 421,544.25
  4. Step 4: Simplify right side
    920,180.25x = 581,845,040,026.59
  5. Step 5: Solve for x
    x = 581,845,040,026.59/920,180.25
  6. Step 6: Final answer
    x = 632,316.38

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Double scale
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Similar ratio
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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.