Home / 1,299,078,045.20-1,948,617,067.80-329,729,661.20

Finding the Fourth Proportional to 1,299,078,045.20, 1,948,617,067.80 and 329,729,661.20

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Solution

The fourth proportional to 1,299,078,045.20, 1,948,617,067.80 and 329,729,661.20 is: 494,594,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,078,045.20 : 1,948,617,067.80 = 329,729,661.20 : x
  2. Step 2: Convert to fraction form
    1,299,078,045.20/1,948,617,067.80 = 329,729,661.20/x
  3. Step 3: Cross multiply
    1,299,078,045.20x = 1,948,617,067.80 × 329,729,661.20
  4. Step 4: Simplify right side
    1,299,078,045.20x = 642,516,845,574,231,424
  5. Step 5: Solve for x
    x = 642,516,845,574,231,424/1,299,078,045.20
  6. Step 6: Final answer
    x = 494,594,491.80

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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.