Home / 818,642,480.87-1,129,841,840.00-521,189,704.37

Finding the Fourth Proportional to 818,642,480.87, 1,129,841,840.00 and 521,189,704.37

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Solution

The fourth proportional to 818,642,480.87, 1,129,841,840.00 and 521,189,704.37 is: 719,315,144.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,642,480.87 : 1,129,841,840.00 = 521,189,704.37 : x
  2. Step 2: Convert to fraction form
    818,642,480.87/1,129,841,840.00 = 521,189,704.37/x
  3. Step 3: Cross multiply
    818,642,480.87x = 1,129,841,840.00 × 521,189,704.37
  4. Step 4: Simplify right side
    818,642,480.87x = 588,861,934,570,110,592
  5. Step 5: Solve for x
    x = 588,861,934,570,110,592/818,642,480.87
  6. Step 6: Final answer
    x = 719,315,144.69

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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.