Finding the Fourth Proportional to 781,189.52, 1,078,031.84 and 458,928.99
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Solution
The fourth proportional to 781,189.52, 1,078,031.84 and 458,928.99 is: 633,316.31
Step by Step Solution
- Step 1: Write the proportion equation
781,189.52 : 1,078,031.84 = 458,928.99 : x - Step 2: Convert to fraction form
781,189.52/1,078,031.84 = 458,928.99/x - Step 3: Cross multiply
781,189.52x = 1,078,031.84 × 458,928.99 - Step 4: Simplify right side
781,189.52x = 494,740,061,224.40 - Step 5: Solve for x
x = 494,740,061,224.40/781,189.52 - Step 6: Final answer
x = 633,316.31
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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.