Home / 1,318,051,075.82-1,818,790,271.20-782,110,394.40

Finding the Fourth Proportional to 1,318,051,075.82, 1,818,790,271.20 and 782,110,394.40

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Solution

The fourth proportional to 1,318,051,075.82, 1,818,790,271.20 and 782,110,394.40 is: 1,079,241,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,051,075.82 : 1,818,790,271.20 = 782,110,394.40 : x
  2. Step 2: Convert to fraction form
    1,318,051,075.82/1,818,790,271.20 = 782,110,394.40/x
  3. Step 3: Cross multiply
    1,318,051,075.82x = 1,818,790,271.20 × 782,110,394.40
  4. Step 4: Simplify right side
    1,318,051,075.82x = 1,422,494,776,339,115,008
  5. Step 5: Solve for x
    x = 1,422,494,776,339,115,008/1,318,051,075.82
  6. Step 6: Final answer
    x = 1,079,241,011.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.