Finding the Fourth Proportional to 974,313,416.80, 1,461,470,125.20 and 664,377,025.60
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Solution
The fourth proportional to 974,313,416.80, 1,461,470,125.20 and 664,377,025.60 is: 996,565,538.40
Step by Step Solution
- Step 1: Write the proportion equation
974,313,416.80 : 1,461,470,125.20 = 664,377,025.60 : x - Step 2: Convert to fraction form
974,313,416.80/1,461,470,125.20 = 664,377,025.60/x - Step 3: Cross multiply
974,313,416.80x = 1,461,470,125.20 × 664,377,025.60 - Step 4: Simplify right side
974,313,416.80x = 970,967,174,783,635,712 - Step 5: Solve for x
x = 970,967,174,783,635,712/974,313,416.80 - Step 6: Final answer
x = 996,565,538.40
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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.