Home / 613,291,247.20-919,936,870.80-395,613,013.60

Finding the Fourth Proportional to 613,291,247.20, 919,936,870.80 and 395,613,013.60

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Solution

The fourth proportional to 613,291,247.20, 919,936,870.80 and 395,613,013.60 is: 593,419,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,291,247.20 : 919,936,870.80 = 395,613,013.60 : x
  2. Step 2: Convert to fraction form
    613,291,247.20/919,936,870.80 = 395,613,013.60/x
  3. Step 3: Cross multiply
    613,291,247.20x = 919,936,870.80 × 395,613,013.60
  4. Step 4: Simplify right side
    613,291,247.20x = 363,938,997,778,941,824
  5. Step 5: Solve for x
    x = 363,938,997,778,941,824/613,291,247.20
  6. Step 6: Final answer
    x = 593,419,520.40

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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.