Finding the Fourth Proportional to 472,395,658.20, 708,593,487.30 and 455,176,969.80
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Solution
The fourth proportional to 472,395,658.20, 708,593,487.30 and 455,176,969.80 is: 682,765,454.70
Step by Step Solution
- Step 1: Write the proportion equation
472,395,658.20 : 708,593,487.30 = 455,176,969.80 : x - Step 2: Convert to fraction form
472,395,658.20/708,593,487.30 = 455,176,969.80/x - Step 3: Cross multiply
472,395,658.20x = 708,593,487.30 × 455,176,969.80 - Step 4: Simplify right side
472,395,658.20x = 322,535,436,369,228,800 - Step 5: Solve for x
x = 322,535,436,369,228,800/472,395,658.20 - Step 6: Final answer
x = 682,765,454.70
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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.