Finding the Fourth Proportional to 1,390,802,725.84, 2,086,526,775.40 and 458,092,102.36
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Solution
The fourth proportional to 1,390,802,725.84, 2,086,526,775.40 and 458,092,102.36 is: 687,244,437.63
Step by Step Solution
- Step 1: Write the proportion equation
1,390,802,725.84 : 2,086,526,775.40 = 458,092,102.36 : x - Step 2: Convert to fraction form
1,390,802,725.84/2,086,526,775.40 = 458,092,102.36/x - Step 3: Cross multiply
1,390,802,725.84x = 2,086,526,775.40 × 458,092,102.36 - Step 4: Simplify right side
1,390,802,725.84x = 955,821,437,173,417,600 - Step 5: Solve for x
x = 955,821,437,173,417,600/1,390,802,725.84 - Step 6: Final answer
x = 687,244,437.63
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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.