Home / 1,268,187,940.80-1,902,281,911.20-579,440,404.80

Finding the Fourth Proportional to 1,268,187,940.80, 1,902,281,911.20 and 579,440,404.80

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Solution

The fourth proportional to 1,268,187,940.80, 1,902,281,911.20 and 579,440,404.80 is: 869,160,607.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,187,940.80 : 1,902,281,911.20 = 579,440,404.80 : x
  2. Step 2: Convert to fraction form
    1,268,187,940.80/1,902,281,911.20 = 579,440,404.80/x
  3. Step 3: Cross multiply
    1,268,187,940.80x = 1,902,281,911.20 × 579,440,404.80
  4. Step 4: Simplify right side
    1,268,187,940.80x = 1,102,259,000,669,445,632
  5. Step 5: Solve for x
    x = 1,102,259,000,669,445,632/1,268,187,940.80
  6. Step 6: Final answer
    x = 869,160,607.20

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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.