Finding the Fourth Proportional to 913,904.93, 1,261,138.82 and 546,389.49
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Solution
The fourth proportional to 913,904.93, 1,261,138.82 and 546,389.49 is: 753,987.61
Step by Step Solution
- Step 1: Write the proportion equation
913,904.93 : 1,261,138.82 = 546,389.49 : x - Step 2: Convert to fraction form
913,904.93/1,261,138.82 = 546,389.49/x - Step 3: Cross multiply
913,904.93x = 1,261,138.82 × 546,389.49 - Step 4: Simplify right side
913,904.93x = 689,072,993,947.05 - Step 5: Solve for x
x = 689,072,993,947.05/913,904.93 - Step 6: Final answer
x = 753,987.61
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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.