Finding the Fourth Proportional to 554,155.17, 764,718.84 and 312,435.63
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Solution
The fourth proportional to 554,155.17, 764,718.84 and 312,435.63 is: 431,152.55
Step by Step Solution
- Step 1: Write the proportion equation
554,155.17 : 764,718.84 = 312,435.63 : x - Step 2: Convert to fraction form
554,155.17/764,718.84 = 312,435.63/x - Step 3: Cross multiply
554,155.17x = 764,718.84 × 312,435.63 - Step 4: Simplify right side
554,155.17x = 238,925,412,548.27 - Step 5: Solve for x
x = 238,925,412,548.27/554,155.17 - Step 6: Final answer
x = 431,152.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.