Finding the Fourth Proportional to 1,621,795,756.13, 2,238,165,042.99 and 907,288,685.93
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Solution
The fourth proportional to 1,621,795,756.13, 2,238,165,042.99 and 907,288,685.93 is: 1,252,107,001.19
Step by Step Solution
- Step 1: Write the proportion equation
1,621,795,756.13 : 2,238,165,042.99 = 907,288,685.93 : x - Step 2: Convert to fraction form
1,621,795,756.13/2,238,165,042.99 = 907,288,685.93/x - Step 3: Cross multiply
1,621,795,756.13x = 2,238,165,042.99 × 907,288,685.93 - Step 4: Simplify right side
1,621,795,756.13x = 2,030,661,820,748,858,624 - Step 5: Solve for x
x = 2,030,661,820,748,858,624/1,621,795,756.13 - Step 6: Final answer
x = 1,252,107,001.19
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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.