Home / 1,119,122,159.23-1,678,686,388.14-429,240,882.43

Finding the Fourth Proportional to 1,119,122,159.23, 1,678,686,388.14 and 429,240,882.43

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Solution

The fourth proportional to 1,119,122,159.23, 1,678,686,388.14 and 429,240,882.43 is: 643,862,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,122,159.23 : 1,678,686,388.14 = 429,240,882.43 : x
  2. Step 2: Convert to fraction form
    1,119,122,159.23/1,678,686,388.14 = 429,240,882.43/x
  3. Step 3: Cross multiply
    1,119,122,159.23x = 1,678,686,388.14 × 429,240,882.43
  4. Step 4: Simplify right side
    1,119,122,159.23x = 720,560,826,568,443,136
  5. Step 5: Solve for x
    x = 720,560,826,568,443,136/1,119,122,159.23
  6. Step 6: Final answer
    x = 643,862,531.56

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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.