Finding the Fourth Proportional to 459,664,420.70, 689,496,631.05 and 402,268,792.70
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Solution
The fourth proportional to 459,664,420.70, 689,496,631.05 and 402,268,792.70 is: 603,403,189.05
Step by Step Solution
- Step 1: Write the proportion equation
459,664,420.70 : 689,496,631.05 = 402,268,792.70 : x - Step 2: Convert to fraction form
459,664,420.70/689,496,631.05 = 402,268,792.70/x - Step 3: Cross multiply
459,664,420.70x = 689,496,631.05 × 402,268,792.70 - Step 4: Simplify right side
459,664,420.70x = 277,362,977,343,200,800 - Step 5: Solve for x
x = 277,362,977,343,200,800/459,664,420.70 - Step 6: Final answer
x = 603,403,189.05
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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.