Finding the Fourth Proportional to 1,623,854,679.21, 2,240,920,389.60 and 881,298,741.96
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Solution
The fourth proportional to 1,623,854,679.21, 2,240,920,389.60 and 881,298,741.96 is: 1,216,192,769.88
Step by Step Solution
- Step 1: Write the proportion equation
1,623,854,679.21 : 2,240,920,389.60 = 881,298,741.96 : x - Step 2: Convert to fraction form
1,623,854,679.21/2,240,920,389.60 = 881,298,741.96/x - Step 3: Cross multiply
1,623,854,679.21x = 2,240,920,389.60 × 881,298,741.96 - Step 4: Simplify right side
1,623,854,679.21x = 1,974,920,320,186,993,152 - Step 5: Solve for x
x = 1,974,920,320,186,993,152/1,623,854,679.21 - Step 6: Final answer
x = 1,216,192,769.88
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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.