Finding the Fourth Proportional to 898,651,442.80, 1,347,977,164.20 and 745,470,463.60
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Solution
The fourth proportional to 898,651,442.80, 1,347,977,164.20 and 745,470,463.60 is: 1,118,205,695.40
Step by Step Solution
- Step 1: Write the proportion equation
898,651,442.80 : 1,347,977,164.20 = 745,470,463.60 : x - Step 2: Convert to fraction form
898,651,442.80/1,347,977,164.20 = 745,470,463.60/x - Step 3: Cross multiply
898,651,442.80x = 1,347,977,164.20 × 745,470,463.60 - Step 4: Simplify right side
898,651,442.80x = 1,004,877,161,518,387,328 - Step 5: Solve for x
x = 1,004,877,161,518,387,328/898,651,442.80 - Step 6: Final answer
x = 1,118,205,695.40
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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.