Finding the Fourth Proportional to 1,581,551,825.12, 2,182,559,272.44 and 903,458,579.84
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Solution
The fourth proportional to 1,581,551,825.12, 2,182,559,272.44 and 903,458,579.84 is: 1,246,782,981.99
Step by Step Solution
- Step 1: Write the proportion equation
1,581,551,825.12 : 2,182,559,272.44 = 903,458,579.84 : x - Step 2: Convert to fraction form
1,581,551,825.12/2,182,559,272.44 = 903,458,579.84/x - Step 3: Cross multiply
1,581,551,825.12x = 2,182,559,272.44 × 903,458,579.84 - Step 4: Simplify right side
1,581,551,825.12x = 1,971,851,900,695,266,304 - Step 5: Solve for x
x = 1,971,851,900,695,266,304/1,581,551,825.12 - Step 6: Final answer
x = 1,246,782,981.99
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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.