Finding the Fourth Proportional to 812,887.03, 1,121,767.54 and 450,305.11
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Solution
The fourth proportional to 812,887.03, 1,121,767.54 and 450,305.11 is: 621,411.88
Step by Step Solution
- Step 1: Write the proportion equation
812,887.03 : 1,121,767.54 = 450,305.11 : x - Step 2: Convert to fraction form
812,887.03/1,121,767.54 = 450,305.11/x - Step 3: Cross multiply
812,887.03x = 1,121,767.54 × 450,305.11 - Step 4: Simplify right side
812,887.03x = 505,137,655,494.13 - Step 5: Solve for x
x = 505,137,655,494.13/812,887.03 - Step 6: Final answer
x = 621,411.88
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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.