Finding the Fourth Proportional to 3,578,414,351.91, 4,938,246,112.68 and 1,970,905,790.81
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Solution
The fourth proportional to 3,578,414,351.91, 4,938,246,112.68 and 1,970,905,790.81 is: 2,719,868,886.82
Step by Step Solution
- Step 1: Write the proportion equation
3,578,414,351.91 : 4,938,246,112.68 = 1,970,905,790.81 : x - Step 2: Convert to fraction form
3,578,414,351.91/4,938,246,112.68 = 1,970,905,790.81/x - Step 3: Cross multiply
3,578,414,351.91x = 4,938,246,112.68 × 1,970,905,790.81 - Step 4: Simplify right side
3,578,414,351.91x = 9,732,817,859,901,292,544 - Step 5: Solve for x
x = 9,732,817,859,901,292,544/3,578,414,351.91 - Step 6: Final answer
x = 2,719,868,886.82
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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.