Finding the Fourth Proportional to 472,392,457.80, 708,588,686.70 and 427,042,825.80
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Solution
The fourth proportional to 472,392,457.80, 708,588,686.70 and 427,042,825.80 is: 640,564,238.70
Step by Step Solution
- Step 1: Write the proportion equation
472,392,457.80 : 708,588,686.70 = 427,042,825.80 : x - Step 2: Convert to fraction form
472,392,457.80/708,588,686.70 = 427,042,825.80/x - Step 3: Cross multiply
472,392,457.80x = 708,588,686.70 × 427,042,825.80 - Step 4: Simplify right side
472,392,457.80x = 302,597,715,098,278,912 - Step 5: Solve for x
x = 302,597,715,098,278,912/472,392,457.80 - Step 6: Final answer
x = 640,564,238.70
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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.