Finding the Fourth Proportional to 7,201,974,320.10, 9,938,842,227.84 and 3,942,965,616.44
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Solution
The fourth proportional to 7,201,974,320.10, 9,938,842,227.84 and 3,942,965,616.44 is: 5,441,356,970.99
Step by Step Solution
- Step 1: Write the proportion equation
7,201,974,320.10 : 9,938,842,227.84 = 3,942,965,616.44 : x - Step 2: Convert to fraction form
7,201,974,320.10/9,938,842,227.84 = 3,942,965,616.44/x - Step 3: Cross multiply
7,201,974,320.10x = 9,938,842,227.84 × 3,942,965,616.44 - Step 4: Simplify right side
7,201,974,320.10x = 39,188,513,171,545,358,336 - Step 5: Solve for x
x = 39,188,513,171,545,358,336/7,201,974,320.10 - Step 6: Final answer
x = 5,441,356,970.99
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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.