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Finding the Fourth Proportional to 1,375,584,680.88, 1,898,337,725.28 and 780,813,137.52

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Solution

The fourth proportional to 1,375,584,680.88, 1,898,337,725.28 and 780,813,137.52 is: 1,077,539,649.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,584,680.88 : 1,898,337,725.28 = 780,813,137.52 : x
  2. Step 2: Convert to fraction form
    1,375,584,680.88/1,898,337,725.28 = 780,813,137.52/x
  3. Step 3: Cross multiply
    1,375,584,680.88x = 1,898,337,725.28 × 780,813,137.52
  4. Step 4: Simplify right side
    1,375,584,680.88x = 1,482,247,035,348,456,448
  5. Step 5: Solve for x
    x = 1,482,247,035,348,456,448/1,375,584,680.88
  6. Step 6: Final answer
    x = 1,077,539,649.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.