Finding the Fourth Proportional to 515,886.92, 711,925.43 and 286,444.70
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Solution
The fourth proportional to 515,886.92, 711,925.43 and 286,444.70 is: 395,294.50
Step by Step Solution
- Step 1: Write the proportion equation
515,886.92 : 711,925.43 = 286,444.70 : x - Step 2: Convert to fraction form
515,886.92/711,925.43 = 286,444.70/x - Step 3: Cross multiply
515,886.92x = 711,925.43 × 286,444.70 - Step 4: Simplify right side
515,886.92x = 203,927,261,226.87 - Step 5: Solve for x
x = 203,927,261,226.87/515,886.92 - Step 6: Final answer
x = 395,294.50
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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.