Finding the Fourth Proportional to 472,395,909.20, 708,593,863.80 and 165,577,305.20
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Solution
The fourth proportional to 472,395,909.20, 708,593,863.80 and 165,577,305.20 is: 248,365,957.80
Step by Step Solution
- Step 1: Write the proportion equation
472,395,909.20 : 708,593,863.80 = 165,577,305.20 : x - Step 2: Convert to fraction form
472,395,909.20/708,593,863.80 = 165,577,305.20/x - Step 3: Cross multiply
472,395,909.20x = 708,593,863.80 × 165,577,305.20 - Step 4: Simplify right side
472,395,909.20x = 117,327,062,449,259,808 - Step 5: Solve for x
x = 117,327,062,449,259,808/472,395,909.20 - Step 6: Final answer
x = 248,365,957.80
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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.