Finding the Fourth Proportional to 579,416,489.80, 869,124,734.70 and 307,318,697.80
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Solution
The fourth proportional to 579,416,489.80, 869,124,734.70 and 307,318,697.80 is: 460,978,046.70
Step by Step Solution
- Step 1: Write the proportion equation
579,416,489.80 : 869,124,734.70 = 307,318,697.80 : x - Step 2: Convert to fraction form
579,416,489.80/869,124,734.70 = 307,318,697.80/x - Step 3: Cross multiply
579,416,489.80x = 869,124,734.70 × 307,318,697.80 - Step 4: Simplify right side
579,416,489.80x = 267,098,281,693,774,496 - Step 5: Solve for x
x = 267,098,281,693,774,496/579,416,489.80 - Step 6: Final answer
x = 460,978,046.70
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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.