Home / 661,189,405.68-991,927,597.59-201,115,617.57

Finding the Fourth Proportional to 661,189,405.68, 991,927,597.59 and 201,115,617.57

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Solution

The fourth proportional to 661,189,405.68, 991,927,597.59 and 201,115,617.57 is: 301,717,071.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,189,405.68 : 991,927,597.59 = 201,115,617.57 : x
  2. Step 2: Convert to fraction form
    661,189,405.68/991,927,597.59 = 201,115,617.57/x
  3. Step 3: Cross multiply
    661,189,405.68x = 991,927,597.59 × 201,115,617.57
  4. Step 4: Simplify right side
    661,189,405.68x = 199,492,131,374,039,296
  5. Step 5: Solve for x
    x = 199,492,131,374,039,296/661,189,405.68
  6. Step 6: Final answer
    x = 301,717,071.78

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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.