Home / 920,852.88-1,380,635.96-408,239.20

Finding the Fourth Proportional to 920,852.88, 1,380,635.96 and 408,239.20

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Solution

The fourth proportional to 920,852.88, 1,380,635.96 and 408,239.20 is: 612,073.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,852.88 : 1,380,635.96 = 408,239.20 : x
  2. Step 2: Convert to fraction form
    920,852.88/1,380,635.96 = 408,239.20/x
  3. Step 3: Cross multiply
    920,852.88x = 1,380,635.96 × 408,239.20
  4. Step 4: Simplify right side
    920,852.88x = 563,629,719,801.63
  5. Step 5: Solve for x
    x = 563,629,719,801.63/920,852.88
  6. Step 6: Final answer
    x = 612,073.58

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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.