Finding the Fourth Proportional to 788,974,542.20, 1,183,461,813.30 and 329,242,647.80
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Solution
The fourth proportional to 788,974,542.20, 1,183,461,813.30 and 329,242,647.80 is: 493,863,971.70
Step by Step Solution
- Step 1: Write the proportion equation
788,974,542.20 : 1,183,461,813.30 = 329,242,647.80 : x - Step 2: Convert to fraction form
788,974,542.20/1,183,461,813.30 = 329,242,647.80/x - Step 3: Cross multiply
788,974,542.20x = 1,183,461,813.30 × 329,242,647.80 - Step 4: Simplify right side
788,974,542.20x = 389,646,100,981,081,280 - Step 5: Solve for x
x = 389,646,100,981,081,280/788,974,542.20 - Step 6: Final answer
x = 493,863,971.70
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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.