Finding the Fourth Proportional to 689,415.06, 951,081.84 and 402,806.28
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Solution
The fourth proportional to 689,415.06, 951,081.84 and 402,806.28 is: 555,690.99
Step by Step Solution
- Step 1: Write the proportion equation
689,415.06 : 951,081.84 = 402,806.28 : x - Step 2: Convert to fraction form
689,415.06/951,081.84 = 402,806.28/x - Step 3: Cross multiply
689,415.06x = 951,081.84 × 402,806.28 - Step 4: Simplify right side
689,415.06x = 383,101,737,945.96 - Step 5: Solve for x
x = 383,101,737,945.96/689,415.06 - Step 6: Final answer
x = 555,690.99
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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.