Home / 1,120,135,989.60-1,680,203,984.40-302,246,978.40

Finding the Fourth Proportional to 1,120,135,989.60, 1,680,203,984.40 and 302,246,978.40

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Solution

The fourth proportional to 1,120,135,989.60, 1,680,203,984.40 and 302,246,978.40 is: 453,370,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,135,989.60 : 1,680,203,984.40 = 302,246,978.40 : x
  2. Step 2: Convert to fraction form
    1,120,135,989.60/1,680,203,984.40 = 302,246,978.40/x
  3. Step 3: Cross multiply
    1,120,135,989.60x = 1,680,203,984.40 × 302,246,978.40
  4. Step 4: Simplify right side
    1,120,135,989.60x = 507,836,577,380,540,736
  5. Step 5: Solve for x
    x = 507,836,577,380,540,736/1,120,135,989.60
  6. Step 6: Final answer
    x = 453,370,467.60

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Double scale
Find fourth proportional to 1,120,135,990.60, 1,680,203,985.90 and 302,246,979.40
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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.