Finding the Fourth Proportional to 579,416,321.80, 869,124,482.70 and 307,318,529.80
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Solution
The fourth proportional to 579,416,321.80, 869,124,482.70 and 307,318,529.80 is: 460,977,794.70
Step by Step Solution
- Step 1: Write the proportion equation
579,416,321.80 : 869,124,482.70 = 307,318,529.80 : x - Step 2: Convert to fraction form
579,416,321.80/869,124,482.70 = 307,318,529.80/x - Step 3: Cross multiply
579,416,321.80x = 869,124,482.70 × 307,318,529.80 - Step 4: Simplify right side
579,416,321.80x = 267,098,058,236,549,568 - Step 5: Solve for x
x = 267,098,058,236,549,568/579,416,321.80 - Step 6: Final answer
x = 460,977,794.70
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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.