Home / 920,170.80-1,380,256.20-470,742.30

Finding the Fourth Proportional to 920,170.80, 1,380,256.20 and 470,742.30

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Solution

The fourth proportional to 920,170.80, 1,380,256.20 and 470,742.30 is: 706,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,170.80 : 1,380,256.20 = 470,742.30 : x
  2. Step 2: Convert to fraction form
    920,170.80/1,380,256.20 = 470,742.30/x
  3. Step 3: Cross multiply
    920,170.80x = 1,380,256.20 × 470,742.30
  4. Step 4: Simplify right side
    920,170.80x = 649,744,978,177.26
  5. Step 5: Solve for x
    x = 649,744,978,177.26/920,170.80
  6. Step 6: Final answer
    x = 706,113.45

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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.