Finding the Fourth Proportional to 518,318.76, 715,283.46 and 288,890.84
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Solution
The fourth proportional to 518,318.76, 715,283.46 and 288,890.84 is: 398,671.34
Step by Step Solution
- Step 1: Write the proportion equation
518,318.76 : 715,283.46 = 288,890.84 : x - Step 2: Convert to fraction form
518,318.76/715,283.46 = 288,890.84/x - Step 3: Cross multiply
518,318.76x = 715,283.46 × 288,890.84 - Step 4: Simplify right side
518,318.76x = 206,638,837,362.25 - Step 5: Solve for x
x = 206,638,837,362.25/518,318.76 - Step 6: Final answer
x = 398,671.34
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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.