Finding the Fourth Proportional to 516,044.64, 712,138.80 and 289,690.08
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Solution
The fourth proportional to 516,044.64, 712,138.80 and 289,690.08 is: 399,770.74
Step by Step Solution
- Step 1: Write the proportion equation
516,044.64 : 712,138.80 = 289,690.08 : x - Step 2: Convert to fraction form
516,044.64/712,138.80 = 289,690.08/x - Step 3: Cross multiply
516,044.64x = 712,138.80 × 289,690.08 - Step 4: Simplify right side
516,044.64x = 206,299,545,943.10 - Step 5: Solve for x
x = 206,299,545,943.10/516,044.64 - Step 6: Final answer
x = 399,770.74
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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.