Home / 998,862,438.80-1,498,293,658.20-978,455,104.40

Finding the Fourth Proportional to 998,862,438.80, 1,498,293,658.20 and 978,455,104.40

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Solution

The fourth proportional to 998,862,438.80, 1,498,293,658.20 and 978,455,104.40 is: 1,467,682,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,862,438.80 : 1,498,293,658.20 = 978,455,104.40 : x
  2. Step 2: Convert to fraction form
    998,862,438.80/1,498,293,658.20 = 978,455,104.40/x
  3. Step 3: Cross multiply
    998,862,438.80x = 1,498,293,658.20 × 978,455,104.40
  4. Step 4: Simplify right side
    998,862,438.80x = 1,466,013,077,755,938,816
  5. Step 5: Solve for x
    x = 1,466,013,077,755,938,816/998,862,438.80
  6. Step 6: Final answer
    x = 1,467,682,656.60

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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.