Finding the Fourth Proportional to 917,793.30, 1,376,689.95 and 815,441.70
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Solution
The fourth proportional to 917,793.30, 1,376,689.95 and 815,441.70 is: 1,223,162.55
Step by Step Solution
- Step 1: Write the proportion equation
917,793.30 : 1,376,689.95 = 815,441.70 : x - Step 2: Convert to fraction form
917,793.30/1,376,689.95 = 815,441.70/x - Step 3: Cross multiply
917,793.30x = 1,376,689.95 × 815,441.70 - Step 4: Simplify right side
917,793.30x = 1,122,610,393,200.91 - Step 5: Solve for x
x = 1,122,610,393,200.91/917,793.30 - Step 6: Final answer
x = 1,223,162.55
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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.