Finding the Fourth Proportional to 615,139.80, 921,845.70 and 488,995.80
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Solution
The fourth proportional to 615,139.80, 921,845.70 and 488,995.80 is: 732,806.88
Step by Step Solution
- Step 1: Write the proportion equation
615,139.80 : 921,845.70 = 488,995.80 : x - Step 2: Convert to fraction form
615,139.80/921,845.70 = 488,995.80/x - Step 3: Cross multiply
615,139.80x = 921,845.70 × 488,995.80 - Step 4: Simplify right side
615,139.80x = 450,778,675,548.06 - Step 5: Solve for x
x = 450,778,675,548.06/615,139.80 - Step 6: Final answer
x = 732,806.88
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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.