Home / 431,424,115.20-647,136,172.80-189,559,411.20

Finding the Fourth Proportional to 431,424,115.20, 647,136,172.80 and 189,559,411.20

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Solution

The fourth proportional to 431,424,115.20, 647,136,172.80 and 189,559,411.20 is: 284,339,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,424,115.20 : 647,136,172.80 = 189,559,411.20 : x
  2. Step 2: Convert to fraction form
    431,424,115.20/647,136,172.80 = 189,559,411.20/x
  3. Step 3: Cross multiply
    431,424,115.20x = 647,136,172.80 × 189,559,411.20
  4. Step 4: Simplify right side
    431,424,115.20x = 122,670,751,882,189,440
  5. Step 5: Solve for x
    x = 122,670,751,882,189,440/431,424,115.20
  6. Step 6: Final answer
    x = 284,339,116.80

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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.