Home / 920,129.40-1,380,784.14-446,556.60

Finding the Fourth Proportional to 920,129.40, 1,380,784.14 and 446,556.60

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Solution

The fourth proportional to 920,129.40, 1,380,784.14 and 446,556.60 is: 670,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,129.40 : 1,380,784.14 = 446,556.60 : x
  2. Step 2: Convert to fraction form
    920,129.40/1,380,784.14 = 446,556.60/x
  3. Step 3: Cross multiply
    920,129.40x = 1,380,784.14 × 446,556.60
  4. Step 4: Simplify right side
    920,129.40x = 616,598,270,892.32
  5. Step 5: Solve for x
    x = 616,598,270,892.32/920,129.40
  6. Step 6: Final answer
    x = 670,121.26

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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.