Finding the Fourth Proportional to 518,344.79, 715,322.95 and 288,895.68
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Solution
The fourth proportional to 518,344.79, 715,322.95 and 288,895.68 is: 398,680.02
Step by Step Solution
- Step 1: Write the proportion equation
518,344.79 : 715,322.95 = 288,895.68 : x - Step 2: Convert to fraction form
518,344.79/715,322.95 = 288,895.68/x - Step 3: Cross multiply
518,344.79x = 715,322.95 × 288,895.68 - Step 4: Simplify right side
518,344.79x = 206,653,709,337.62 - Step 5: Solve for x
x = 206,653,709,337.62/518,344.79 - Step 6: Final answer
x = 398,680.02
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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.