Finding the Fourth Proportional to 518,312.86, 715,283.57 and 288,893.74
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Solution
The fourth proportional to 518,312.86, 715,283.57 and 288,893.74 is: 398,679.95
Step by Step Solution
- Step 1: Write the proportion equation
518,312.86 : 715,283.57 = 288,893.74 : x - Step 2: Convert to fraction form
518,312.86/715,283.57 = 288,893.74/x - Step 3: Cross multiply
518,312.86x = 715,283.57 × 288,893.74 - Step 4: Simplify right side
518,312.86x = 206,640,945,697.85 - Step 5: Solve for x
x = 206,640,945,697.85/518,312.86 - Step 6: Final answer
x = 398,679.95
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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.