Finding the Fourth Proportional to 760,125.60, 1,048,989.84 and 420,617.76
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Solution
The fourth proportional to 760,125.60, 1,048,989.84 and 420,617.76 is: 580,461.65
Step by Step Solution
- Step 1: Write the proportion equation
760,125.60 : 1,048,989.84 = 420,617.76 : x - Step 2: Convert to fraction form
760,125.60/1,048,989.84 = 420,617.76/x - Step 3: Cross multiply
760,125.60x = 1,048,989.84 × 420,617.76 - Step 4: Simplify right side
760,125.60x = 441,223,756,763.56 - Step 5: Solve for x
x = 441,223,756,763.56/760,125.60 - Step 6: Final answer
x = 580,461.65
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1.5x scale
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.