Finding the Fourth Proportional to 1,238,802,403.40, 1,858,203,605.10 and 749,026,377.80
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Solution
The fourth proportional to 1,238,802,403.40, 1,858,203,605.10 and 749,026,377.80 is: 1,123,539,566.70
Step by Step Solution
- Step 1: Write the proportion equation
1,238,802,403.40 : 1,858,203,605.10 = 749,026,377.80 : x - Step 2: Convert to fraction form
1,238,802,403.40/1,858,203,605.10 = 749,026,377.80/x - Step 3: Cross multiply
1,238,802,403.40x = 1,858,203,605.10 × 749,026,377.80 - Step 4: Simplify right side
1,238,802,403.40x = 1,391,843,515,542,954,496 - Step 5: Solve for x
x = 1,391,843,515,542,954,496/1,238,802,403.40 - Step 6: Final answer
x = 1,123,539,566.70
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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.