Finding the Fourth Proportional to 1,623,998,661.29, 2,241,119,811.21 and 881,442,877.13
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Solution
The fourth proportional to 1,623,998,661.29, 2,241,119,811.21 and 881,442,877.13 is: 1,216,392,070.68
Step by Step Solution
- Step 1: Write the proportion equation
1,623,998,661.29 : 2,241,119,811.21 = 881,442,877.13 : x - Step 2: Convert to fraction form
1,623,998,661.29/2,241,119,811.21 = 881,442,877.13/x - Step 3: Cross multiply
1,623,998,661.29x = 2,241,119,811.21 × 881,442,877.13 - Step 4: Simplify right side
1,623,998,661.29x = 1,975,419,094,385,984,768 - Step 5: Solve for x
x = 1,975,419,094,385,984,768/1,623,998,661.29 - Step 6: Final answer
x = 1,216,392,070.68
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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.