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Finding the Fourth Proportional to 998,869,728.34, 1,498,448,155.38 and 308,830,790.71

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Solution

The fourth proportional to 998,869,728.34, 1,498,448,155.38 and 308,830,790.71 is: 463,290,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,869,728.34 : 1,498,448,155.38 = 308,830,790.71 : x
  2. Step 2: Convert to fraction form
    998,869,728.34/1,498,448,155.38 = 308,830,790.71/x
  3. Step 3: Cross multiply
    998,869,728.34x = 1,498,448,155.38 × 308,830,790.71
  4. Step 4: Simplify right side
    998,869,728.34x = 462,766,928,663,946,368
  5. Step 5: Solve for x
    x = 462,766,928,663,946,368/998,869,728.34
  6. Step 6: Final answer
    x = 463,290,572.87

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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.