Finding the Fourth Proportional to 472,392,421.20, 708,588,631.80 and 357,601,165.20
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Solution
The fourth proportional to 472,392,421.20, 708,588,631.80 and 357,601,165.20 is: 536,401,747.80
Step by Step Solution
- Step 1: Write the proportion equation
472,392,421.20 : 708,588,631.80 = 357,601,165.20 : x - Step 2: Convert to fraction form
472,392,421.20/708,588,631.80 = 357,601,165.20/x - Step 3: Cross multiply
472,392,421.20x = 708,588,631.80 × 357,601,165.20 - Step 4: Simplify right side
472,392,421.20x = 253,392,120,379,153,760 - Step 5: Solve for x
x = 253,392,120,379,153,760/472,392,421.20 - Step 6: Final answer
x = 536,401,747.80
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1.5x scale
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.