Finding the Fourth Proportional to 788,974,220.70, 1,183,461,331.05 and 329,242,326.30
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Solution
The fourth proportional to 788,974,220.70, 1,183,461,331.05 and 329,242,326.30 is: 493,863,489.45
Step by Step Solution
- Step 1: Write the proportion equation
788,974,220.70 : 1,183,461,331.05 = 329,242,326.30 : x - Step 2: Convert to fraction form
788,974,220.70/1,183,461,331.05 = 329,242,326.30/x - Step 3: Cross multiply
788,974,220.70x = 1,183,461,331.05 × 329,242,326.30 - Step 4: Simplify right side
788,974,220.70x = 389,645,561,720,996,416 - Step 5: Solve for x
x = 389,645,561,720,996,416/788,974,220.70 - Step 6: Final answer
x = 493,863,489.45
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Double scale
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Similar ratio
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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.