Finding the Fourth Proportional to 1,380,605,964.96, 2,071,199,794.53 and 447,855,980.99
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Solution
The fourth proportional to 1,380,605,964.96, 2,071,199,794.53 and 447,855,980.99 is: 671,878,319.62
Step by Step Solution
- Step 1: Write the proportion equation
1,380,605,964.96 : 2,071,199,794.53 = 447,855,980.99 : x - Step 2: Convert to fraction form
1,380,605,964.96/2,071,199,794.53 = 447,855,980.99/x - Step 3: Cross multiply
1,380,605,964.96x = 2,071,199,794.53 × 447,855,980.99 - Step 4: Simplify right side
1,380,605,964.96x = 927,599,215,795,163,648 - Step 5: Solve for x
x = 927,599,215,795,163,648/1,380,605,964.96 - Step 6: Final answer
x = 671,878,319.62
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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.