Finding the Fourth Proportional to 579,439.70, 869,159.55 and 509,455.70
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Solution
The fourth proportional to 579,439.70, 869,159.55 and 509,455.70 is: 764,183.55
Step by Step Solution
- Step 1: Write the proportion equation
579,439.70 : 869,159.55 = 509,455.70 : x - Step 2: Convert to fraction form
579,439.70/869,159.55 = 509,455.70/x - Step 3: Cross multiply
579,439.70x = 869,159.55 × 509,455.70 - Step 4: Simplify right side
579,439.70x = 442,798,286,956.94 - Step 5: Solve for x
x = 442,798,286,956.94/579,439.70 - Step 6: Final answer
x = 764,183.55
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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.