Finding the Fourth Proportional to 712,539.60, 1,069,414.20 and 292,117.20
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Solution
The fourth proportional to 712,539.60, 1,069,414.20 and 292,117.20 is: 438,423.75
Step by Step Solution
- Step 1: Write the proportion equation
712,539.60 : 1,069,414.20 = 292,117.20 : x - Step 2: Convert to fraction form
712,539.60/1,069,414.20 = 292,117.20/x - Step 3: Cross multiply
712,539.60x = 1,069,414.20 × 292,117.20 - Step 4: Simplify right side
712,539.60x = 312,394,281,744.24 - Step 5: Solve for x
x = 312,394,281,744.24/712,539.60 - Step 6: Final answer
x = 438,423.75
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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.