Home / 998,862,521.80-1,498,293,782.70-978,455,187.40

Finding the Fourth Proportional to 998,862,521.80, 1,498,293,782.70 and 978,455,187.40

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Solution

The fourth proportional to 998,862,521.80, 1,498,293,782.70 and 978,455,187.40 is: 1,467,682,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,862,521.80 : 1,498,293,782.70 = 978,455,187.40 : x
  2. Step 2: Convert to fraction form
    998,862,521.80/1,498,293,782.70 = 978,455,187.40/x
  3. Step 3: Cross multiply
    998,862,521.80x = 1,498,293,782.70 × 978,455,187.40
  4. Step 4: Simplify right side
    998,862,521.80x = 1,466,013,323,931,983,360
  5. Step 5: Solve for x
    x = 1,466,013,323,931,983,360/998,862,521.80
  6. Step 6: Final answer
    x = 1,467,682,781.10

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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.