Finding the Fourth Proportional to 518,058.60, 777,617.95 and 427,813.87
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Solution
The fourth proportional to 518,058.60, 777,617.95 and 427,813.87 is: 642,158.52
Step by Step Solution
- Step 1: Write the proportion equation
518,058.60 : 777,617.95 = 427,813.87 : x - Step 2: Convert to fraction form
518,058.60/777,617.95 = 427,813.87/x - Step 3: Cross multiply
518,058.60x = 777,617.95 × 427,813.87 - Step 4: Simplify right side
518,058.60x = 332,675,744,570.97 - Step 5: Solve for x
x = 332,675,744,570.97/518,058.60 - Step 6: Final answer
x = 642,158.52
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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.