Finding the Fourth Proportional to 661,718,331.20, 992,614,821.60 and 201,671,508.80
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Solution
The fourth proportional to 661,718,331.20, 992,614,821.60 and 201,671,508.80 is: 302,518,638.66
Step by Step Solution
- Step 1: Write the proportion equation
661,718,331.20 : 992,614,821.60 = 201,671,508.80 : x - Step 2: Convert to fraction form
661,718,331.20/992,614,821.60 = 201,671,508.80/x - Step 3: Cross multiply
661,718,331.20x = 992,614,821.60 × 201,671,508.80 - Step 4: Simplify right side
661,718,331.20x = 200,182,128,729,314,848 - Step 5: Solve for x
x = 200,182,128,729,314,848/661,718,331.20 - Step 6: Final answer
x = 302,518,638.66
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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.