Finding the Fourth Proportional to 515,886.93, 711,889.26 and 286,432.36
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Solution
The fourth proportional to 515,886.93, 711,889.26 and 286,432.36 is: 395,257.39
Step by Step Solution
- Step 1: Write the proportion equation
515,886.93 : 711,889.26 = 286,432.36 : x - Step 2: Convert to fraction form
515,886.93/711,889.26 = 286,432.36/x - Step 3: Cross multiply
515,886.93x = 711,889.26 × 286,432.36 - Step 4: Simplify right side
515,886.93x = 203,908,119,020.73 - Step 5: Solve for x
x = 203,908,119,020.73/515,886.93 - Step 6: Final answer
x = 395,257.39
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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.