Finding the Fourth Proportional to 712,734.98, 983,585.42 and 390,423.80
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Solution
The fourth proportional to 712,734.98, 983,585.42 and 390,423.80 is: 538,790.95
Step by Step Solution
- Step 1: Write the proportion equation
712,734.98 : 983,585.42 = 390,423.80 : x - Step 2: Convert to fraction form
712,734.98/983,585.42 = 390,423.80/x - Step 3: Cross multiply
712,734.98x = 983,585.42 × 390,423.80 - Step 4: Simplify right side
712,734.98x = 384,015,157,301.00 - Step 5: Solve for x
x = 384,015,157,301.00/712,734.98 - Step 6: Final answer
x = 538,790.95
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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.