Finding the Fourth Proportional to 3,078,237,662.99, 4,247,854,169.95 and 1,668,511,358.75
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Solution
The fourth proportional to 3,078,237,662.99, 4,247,854,169.95 and 1,668,511,358.75 is: 2,302,483,988.84
Step by Step Solution
- Step 1: Write the proportion equation
3,078,237,662.99 : 4,247,854,169.95 = 1,668,511,358.75 : x - Step 2: Convert to fraction form
3,078,237,662.99/4,247,854,169.95 = 1,668,511,358.75/x - Step 3: Cross multiply
3,078,237,662.99x = 4,247,854,169.95 × 1,668,511,358.75 - Step 4: Simplify right side
3,078,237,662.99x = 7,087,592,932,875,127,808 - Step 5: Solve for x
x = 7,087,592,932,875,127,808/3,078,237,662.99 - Step 6: Final answer
x = 2,302,483,988.84
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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.