Finding the Fourth Proportional to 859,963,213.80, 1,289,944,820.70 and 471,635,994.60
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Solution
The fourth proportional to 859,963,213.80, 1,289,944,820.70 and 471,635,994.60 is: 707,453,991.90
Step by Step Solution
- Step 1: Write the proportion equation
859,963,213.80 : 1,289,944,820.70 = 471,635,994.60 : x - Step 2: Convert to fraction form
859,963,213.80/1,289,944,820.70 = 471,635,994.60/x - Step 3: Cross multiply
859,963,213.80x = 1,289,944,820.70 × 471,635,994.60 - Step 4: Simplify right side
859,963,213.80x = 608,384,408,489,963,264 - Step 5: Solve for x
x = 608,384,408,489,963,264/859,963,213.80 - Step 6: Final answer
x = 707,453,991.90
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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.