Home / 920,540.40-1,380,810.60-255,692.40

Finding the Fourth Proportional to 920,540.40, 1,380,810.60 and 255,692.40

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Solution

The fourth proportional to 920,540.40, 1,380,810.60 and 255,692.40 is: 383,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,540.40 : 1,380,810.60 = 255,692.40 : x
  2. Step 2: Convert to fraction form
    920,540.40/1,380,810.60 = 255,692.40/x
  3. Step 3: Cross multiply
    920,540.40x = 1,380,810.60 × 255,692.40
  4. Step 4: Simplify right side
    920,540.40x = 353,062,776,259.44
  5. Step 5: Solve for x
    x = 353,062,776,259.44/920,540.40
  6. Step 6: Final answer
    x = 383,538.60

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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.