Finding the Fourth Proportional to 1,205,202,391.25, 1,663,172,615.70 and 676,566,237.56
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Solution
The fourth proportional to 1,205,202,391.25, 1,663,172,615.70 and 676,566,237.56 is: 933,657,655.50
Step by Step Solution
- Step 1: Write the proportion equation
1,205,202,391.25 : 1,663,172,615.70 = 676,566,237.56 : x - Step 2: Convert to fraction form
1,205,202,391.25/1,663,172,615.70 = 676,566,237.56/x - Step 3: Cross multiply
1,205,202,391.25x = 1,663,172,615.70 × 676,566,237.56 - Step 4: Simplify right side
1,205,202,391.25x = 1,125,246,439,008,656,896 - Step 5: Solve for x
x = 1,125,246,439,008,656,896/1,205,202,391.25 - Step 6: Final answer
x = 933,657,655.50
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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.