Finding the Fourth Proportional to 638,401,890.48, 957,643,235.09 and 269,868,142.13
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Solution
The fourth proportional to 638,401,890.48, 957,643,235.09 and 269,868,142.13 is: 404,819,290.99
Step by Step Solution
- Step 1: Write the proportion equation
638,401,890.48 : 957,643,235.09 = 269,868,142.13 : x - Step 2: Convert to fraction form
638,401,890.48/957,643,235.09 = 269,868,142.13/x - Step 3: Cross multiply
638,401,890.48x = 957,643,235.09 × 269,868,142.13 - Step 4: Simplify right side
638,401,890.48x = 258,437,400,670,963,584 - Step 5: Solve for x
x = 258,437,400,670,963,584/638,401,890.48 - Step 6: Final answer
x = 404,819,290.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.