Finding the Fourth Proportional to 664,330,971.60, 996,496,457.40 and 615,958,030.80
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Solution
The fourth proportional to 664,330,971.60, 996,496,457.40 and 615,958,030.80 is: 923,937,046.20
Step by Step Solution
- Step 1: Write the proportion equation
664,330,971.60 : 996,496,457.40 = 615,958,030.80 : x - Step 2: Convert to fraction form
664,330,971.60/996,496,457.40 = 615,958,030.80/x - Step 3: Cross multiply
664,330,971.60x = 996,496,457.40 × 615,958,030.80 - Step 4: Simplify right side
664,330,971.60x = 613,799,995,599,280,000 - Step 5: Solve for x
x = 613,799,995,599,280,000/664,330,971.60 - Step 6: Final answer
x = 923,937,046.20
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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.