Finding the Fourth Proportional to 989,910.80, 1,484,866.20 and 358,845.20
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Solution
The fourth proportional to 989,910.80, 1,484,866.20 and 358,845.20 is: 538,267.80
Step by Step Solution
- Step 1: Write the proportion equation
989,910.80 : 1,484,866.20 = 358,845.20 : x - Step 2: Convert to fraction form
989,910.80/1,484,866.20 = 358,845.20/x - Step 3: Cross multiply
989,910.80x = 1,484,866.20 × 358,845.20 - Step 4: Simplify right side
989,910.80x = 532,837,108,512.24 - Step 5: Solve for x
x = 532,837,108,512.24/989,910.80 - Step 6: Final answer
x = 538,267.80
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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.