Finding the Fourth Proportional to 1,358,421,837.54, 1,874,628,484.13 and 771,743,166.18
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Solution
The fourth proportional to 1,358,421,837.54, 1,874,628,484.13 and 771,743,166.18 is: 1,065,009,175.92
Step by Step Solution
- Step 1: Write the proportion equation
1,358,421,837.54 : 1,874,628,484.13 = 771,743,166.18 : x - Step 2: Convert to fraction form
1,358,421,837.54/1,874,628,484.13 = 771,743,166.18/x - Step 3: Cross multiply
1,358,421,837.54x = 1,874,628,484.13 × 771,743,166.18 - Step 4: Simplify right side
1,358,421,837.54x = 1,446,731,721,749,841,152 - Step 5: Solve for x
x = 1,446,731,721,749,841,152/1,358,421,837.54 - Step 6: Final answer
x = 1,065,009,175.92
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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.