Home / 628,047,987.89-942,212,487.77-191,382,847.25

Finding the Fourth Proportional to 628,047,987.89, 942,212,487.77 and 191,382,847.25

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Solution

The fourth proportional to 628,047,987.89, 942,212,487.77 and 191,382,847.25 is: 287,117,086.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,047,987.89 : 942,212,487.77 = 191,382,847.25 : x
  2. Step 2: Convert to fraction form
    628,047,987.89/942,212,487.77 = 191,382,847.25/x
  3. Step 3: Cross multiply
    628,047,987.89x = 942,212,487.77 × 191,382,847.25
  4. Step 4: Simplify right side
    628,047,987.89x = 180,323,308,622,971,488
  5. Step 5: Solve for x
    x = 180,323,308,622,971,488/628,047,987.89
  6. Step 6: Final answer
    x = 287,117,086.75

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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.