Finding the Fourth Proportional to 472,395,909.80, 708,593,864.70 and 278,207,368.40
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Solution
The fourth proportional to 472,395,909.80, 708,593,864.70 and 278,207,368.40 is: 417,311,052.60
Step by Step Solution
- Step 1: Write the proportion equation
472,395,909.80 : 708,593,864.70 = 278,207,368.40 : x - Step 2: Convert to fraction form
472,395,909.80/708,593,864.70 = 278,207,368.40/x - Step 3: Cross multiply
472,395,909.80x = 708,593,864.70 × 278,207,368.40 - Step 4: Simplify right side
472,395,909.80x = 197,136,034,362,572,640 - Step 5: Solve for x
x = 197,136,034,362,572,640/472,395,909.80 - Step 6: Final answer
x = 417,311,052.60
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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.