Home / 990,302,103.80-1,485,453,155.70-531,137,079.80

Finding the Fourth Proportional to 990,302,103.80, 1,485,453,155.70 and 531,137,079.80

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Solution

The fourth proportional to 990,302,103.80, 1,485,453,155.70 and 531,137,079.80 is: 796,705,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,302,103.80 : 1,485,453,155.70 = 531,137,079.80 : x
  2. Step 2: Convert to fraction form
    990,302,103.80/1,485,453,155.70 = 531,137,079.80/x
  3. Step 3: Cross multiply
    990,302,103.80x = 1,485,453,155.70 × 531,137,079.80
  4. Step 4: Simplify right side
    990,302,103.80x = 788,979,251,298,192,768
  5. Step 5: Solve for x
    x = 788,979,251,298,192,768/990,302,103.80
  6. Step 6: Final answer
    x = 796,705,619.70

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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.