Home / 1,265,504,090.80-1,898,256,136.20-345,473,431.60

Finding the Fourth Proportional to 1,265,504,090.80, 1,898,256,136.20 and 345,473,431.60

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Solution

The fourth proportional to 1,265,504,090.80, 1,898,256,136.20 and 345,473,431.60 is: 518,210,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,504,090.80 : 1,898,256,136.20 = 345,473,431.60 : x
  2. Step 2: Convert to fraction form
    1,265,504,090.80/1,898,256,136.20 = 345,473,431.60/x
  3. Step 3: Cross multiply
    1,265,504,090.80x = 1,898,256,136.20 × 345,473,431.60
  4. Step 4: Simplify right side
    1,265,504,090.80x = 655,797,061,428,771,072
  5. Step 5: Solve for x
    x = 655,797,061,428,771,072/1,265,504,090.80
  6. Step 6: Final answer
    x = 518,210,147.40

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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.