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Finding the Fourth Proportional to 1,312,795,338.03, 1,811,636,249.94 and 718,074,620.28

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Solution

The fourth proportional to 1,312,795,338.03, 1,811,636,249.94 and 718,074,620.28 is: 990,931,316.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,795,338.03 : 1,811,636,249.94 = 718,074,620.28 : x
  2. Step 2: Convert to fraction form
    1,312,795,338.03/1,811,636,249.94 = 718,074,620.28/x
  3. Step 3: Cross multiply
    1,312,795,338.03x = 1,811,636,249.94 × 718,074,620.28
  4. Step 4: Simplify right side
    1,312,795,338.03x = 1,300,890,012,261,148,672
  5. Step 5: Solve for x
    x = 1,300,890,012,261,148,672/1,312,795,338.03
  6. Step 6: Final answer
    x = 990,931,316.23

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Why These Related Problems?

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