Home / 1,299,078,003.70-1,948,617,005.55-329,729,619.70

Finding the Fourth Proportional to 1,299,078,003.70, 1,948,617,005.55 and 329,729,619.70

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Solution

The fourth proportional to 1,299,078,003.70, 1,948,617,005.55 and 329,729,619.70 is: 494,594,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,078,003.70 : 1,948,617,005.55 = 329,729,619.70 : x
  2. Step 2: Convert to fraction form
    1,299,078,003.70/1,948,617,005.55 = 329,729,619.70/x
  3. Step 3: Cross multiply
    1,299,078,003.70x = 1,948,617,005.55 × 329,729,619.70
  4. Step 4: Simplify right side
    1,299,078,003.70x = 642,516,744,180,954,240
  5. Step 5: Solve for x
    x = 642,516,744,180,954,240/1,299,078,003.70
  6. Step 6: Final answer
    x = 494,594,429.55

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1.5x scale

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.