Finding the Fourth Proportional to 817,403.63, 1,226,302.31 and 256,438.13
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Solution
The fourth proportional to 817,403.63, 1,226,302.31 and 256,438.13 is: 384,718.95
Step by Step Solution
- Step 1: Write the proportion equation
817,403.63 : 1,226,302.31 = 256,438.13 : x - Step 2: Convert to fraction form
817,403.63/1,226,302.31 = 256,438.13/x - Step 3: Cross multiply
817,403.63x = 1,226,302.31 × 256,438.13 - Step 4: Simplify right side
817,403.63x = 314,470,665,700.66 - Step 5: Solve for x
x = 314,470,665,700.66/817,403.63 - Step 6: Final answer
x = 384,718.95
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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.