Home / 3,128,994,163.20-4,694,121,100.80-918,199,603.20

Finding the Fourth Proportional to 3,128,994,163.20, 4,694,121,100.80 and 918,199,603.20

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Solution

The fourth proportional to 3,128,994,163.20, 4,694,121,100.80 and 918,199,603.20 is: 1,377,484,235.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,994,163.20 : 4,694,121,100.80 = 918,199,603.20 : x
  2. Step 2: Convert to fraction form
    3,128,994,163.20/4,694,121,100.80 = 918,199,603.20/x
  3. Step 3: Cross multiply
    3,128,994,163.20x = 4,694,121,100.80 × 918,199,603.20
  4. Step 4: Simplify right side
    3,128,994,163.20x = 4,310,140,132,127,307,776
  5. Step 5: Solve for x
    x = 4,310,140,132,127,307,776/3,128,994,163.20
  6. Step 6: Final answer
    x = 1,377,484,235.29

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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.