Finding the Fourth Proportional to 579,313,097.20, 868,969,645.80 and 515,823,612.40
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Solution
The fourth proportional to 579,313,097.20, 868,969,645.80 and 515,823,612.40 is: 773,735,418.60
Step by Step Solution
- Step 1: Write the proportion equation
579,313,097.20 : 868,969,645.80 = 515,823,612.40 : x - Step 2: Convert to fraction form
579,313,097.20/868,969,645.80 = 515,823,612.40/x - Step 3: Cross multiply
579,313,097.20x = 868,969,645.80 × 515,823,612.40 - Step 4: Simplify right side
579,313,097.20x = 448,235,061,762,504,448 - Step 5: Solve for x
x = 448,235,061,762,504,448/579,313,097.20 - Step 6: Final answer
x = 773,735,418.60
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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.