Finding the Fourth Proportional to 901,385.20, 1,243,911.84 and 498,977.20
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Solution
The fourth proportional to 901,385.20, 1,243,911.84 and 498,977.20 is: 688,588.68
Step by Step Solution
- Step 1: Write the proportion equation
901,385.20 : 1,243,911.84 = 498,977.20 : x - Step 2: Convert to fraction form
901,385.20/1,243,911.84 = 498,977.20/x - Step 3: Cross multiply
901,385.20x = 1,243,911.84 × 498,977.20 - Step 4: Simplify right side
901,385.20x = 620,683,646,970.05 - Step 5: Solve for x
x = 620,683,646,970.05/901,385.20 - Step 6: Final answer
x = 688,588.68
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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.