Finding the Fourth Proportional to 1,425,549.75, 2,138,643.75 and 478,894.65
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Solution
The fourth proportional to 1,425,549.75, 2,138,643.75 and 478,894.65 is: 718,449.18
Step by Step Solution
- Step 1: Write the proportion equation
1,425,549.75 : 2,138,643.75 = 478,894.65 : x - Step 2: Convert to fraction form
1,425,549.75/2,138,643.75 = 478,894.65/x - Step 3: Cross multiply
1,425,549.75x = 2,138,643.75 × 478,894.65 - Step 4: Simplify right side
1,425,549.75x = 1,024,185,050,130.94 - Step 5: Solve for x
x = 1,024,185,050,130.94/1,425,549.75 - Step 6: Final answer
x = 718,449.18
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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.