Finding the Fourth Proportional to 838,651,458.60, 1,257,965,378.10 and 378,588,889.80
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Solution
The fourth proportional to 838,651,458.60, 1,257,965,378.10 and 378,588,889.80 is: 567,878,003.45
Step by Step Solution
- Step 1: Write the proportion equation
838,651,458.60 : 1,257,965,378.10 = 378,588,889.80 : x - Step 2: Convert to fraction form
838,651,458.60/1,257,965,378.10 = 378,588,889.80/x - Step 3: Cross multiply
838,651,458.60x = 1,257,965,378.10 × 378,588,889.80 - Step 4: Simplify right side
838,651,458.60x = 476,251,715,901,716,224 - Step 5: Solve for x
x = 476,251,715,901,716,224/838,651,458.60 - Step 6: Final answer
x = 567,878,003.45
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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.