Finding the Fourth Proportional to 1,176,716,390.40, 1,623,748,449.60 and 724,522,550.40
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Solution
The fourth proportional to 1,176,716,390.40, 1,623,748,449.60 and 724,522,550.40 is: 999,767,129.54
Step by Step Solution
- Step 1: Write the proportion equation
1,176,716,390.40 : 1,623,748,449.60 = 724,522,550.40 : x - Step 2: Convert to fraction form
1,176,716,390.40/1,623,748,449.60 = 724,522,550.40/x - Step 3: Cross multiply
1,176,716,390.40x = 1,623,748,449.60 × 724,522,550.40 - Step 4: Simplify right side
1,176,716,390.40x = 1,176,442,367,912,237,824 - Step 5: Solve for x
x = 1,176,442,367,912,237,824/1,176,716,390.40 - Step 6: Final answer
x = 999,767,129.54
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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.