Finding the Fourth Proportional to 974,313,578.80, 1,461,470,368.20 and 664,377,187.60
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Solution
The fourth proportional to 974,313,578.80, 1,461,470,368.20 and 664,377,187.60 is: 996,565,781.40
Step by Step Solution
- Step 1: Write the proportion equation
974,313,578.80 : 1,461,470,368.20 = 664,377,187.60 : x - Step 2: Convert to fraction form
974,313,578.80/1,461,470,368.20 = 664,377,187.60/x - Step 3: Cross multiply
974,313,578.80x = 1,461,470,368.20 × 664,377,187.60 - Step 4: Simplify right side
974,313,578.80x = 970,967,572,985,452,544 - Step 5: Solve for x
x = 970,967,572,985,452,544/974,313,578.80 - Step 6: Final answer
x = 996,565,781.40
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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.