Finding the Fourth Proportional to 620,557,640.20, 930,836,460.30 and 611,487,713.80
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Solution
The fourth proportional to 620,557,640.20, 930,836,460.30 and 611,487,713.80 is: 917,231,570.70
Step by Step Solution
- Step 1: Write the proportion equation
620,557,640.20 : 930,836,460.30 = 611,487,713.80 : x - Step 2: Convert to fraction form
620,557,640.20/930,836,460.30 = 611,487,713.80/x - Step 3: Cross multiply
620,557,640.20x = 930,836,460.30 × 611,487,713.80 - Step 4: Simplify right side
620,557,640.20x = 569,195,059,030,531,392 - Step 5: Solve for x
x = 569,195,059,030,531,392/620,557,640.20 - Step 6: Final answer
x = 917,231,570.70
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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.