Finding the Fourth Proportional to 840,456.12, 1,254,129.12 and 749,876.18
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Solution
The fourth proportional to 840,456.12, 1,254,129.12 and 749,876.18 is: 1,118,965.66
Step by Step Solution
- Step 1: Write the proportion equation
840,456.12 : 1,254,129.12 = 749,876.18 : x - Step 2: Convert to fraction form
840,456.12/1,254,129.12 = 749,876.18/x - Step 3: Cross multiply
840,456.12x = 1,254,129.12 × 749,876.18 - Step 4: Simplify right side
840,456.12x = 940,441,544,649.68 - Step 5: Solve for x
x = 940,441,544,649.68/840,456.12 - Step 6: Final answer
x = 1,118,965.66
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.