Home / 5,120,280,571.76-7,065,949,571.16-2,892,572,278.64

Finding the Fourth Proportional to 5,120,280,571.76, 7,065,949,571.16 and 2,892,572,278.64

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Solution

The fourth proportional to 5,120,280,571.76, 7,065,949,571.16 and 2,892,572,278.64 is: 3,991,728,493.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120,280,571.76 : 7,065,949,571.16 = 2,892,572,278.64 : x
  2. Step 2: Convert to fraction form
    5,120,280,571.76/7,065,949,571.16 = 2,892,572,278.64/x
  3. Step 3: Cross multiply
    5,120,280,571.76x = 7,065,949,571.16 × 2,892,572,278.64
  4. Step 4: Simplify right side
    5,120,280,571.76x = 20,438,769,851,805,609,984
  5. Step 5: Solve for x
    x = 20,438,769,851,805,609,984/5,120,280,571.76
  6. Step 6: Final answer
    x = 3,991,728,493.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.