Finding the Fourth Proportional to 1,358,421,839.03, 1,874,628,486.20 and 771,743,167.67
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Solution
The fourth proportional to 1,358,421,839.03, 1,874,628,486.20 and 771,743,167.67 is: 1,065,009,177.99
Step by Step Solution
- Step 1: Write the proportion equation
1,358,421,839.03 : 1,874,628,486.20 = 771,743,167.67 : x - Step 2: Convert to fraction form
1,358,421,839.03/1,874,628,486.20 = 771,743,167.67/x - Step 3: Cross multiply
1,358,421,839.03x = 1,874,628,486.20 × 771,743,167.67 - Step 4: Simplify right side
1,358,421,839.03x = 1,446,731,726,151,020,800 - Step 5: Solve for x
x = 1,446,731,726,151,020,800/1,358,421,839.03 - Step 6: Final answer
x = 1,065,009,177.99
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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.