Home / 990,721,063.80-1,486,075,690.80-253,789,543.80

Finding the Fourth Proportional to 990,721,063.80, 1,486,075,690.80 and 253,789,543.80

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Solution

The fourth proportional to 990,721,063.80, 1,486,075,690.80 and 253,789,543.80 is: 380,682,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,721,063.80 : 1,486,075,690.80 = 253,789,543.80 : x
  2. Step 2: Convert to fraction form
    990,721,063.80/1,486,075,690.80 = 253,789,543.80/x
  3. Step 3: Cross multiply
    990,721,063.80x = 1,486,075,690.80 × 253,789,543.80
  4. Step 4: Simplify right side
    990,721,063.80x = 377,150,471,620,401,856
  5. Step 5: Solve for x
    x = 377,150,471,620,401,856/990,721,063.80
  6. Step 6: Final answer
    x = 380,682,803.06

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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.