Finding the Fourth Proportional to 875,220.40, 1,310,206.20 and 520,051.60
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Solution
The fourth proportional to 875,220.40, 1,310,206.20 and 520,051.60 is: 778,517.99
Step by Step Solution
- Step 1: Write the proportion equation
875,220.40 : 1,310,206.20 = 520,051.60 : x - Step 2: Convert to fraction form
875,220.40/1,310,206.20 = 520,051.60/x - Step 3: Cross multiply
875,220.40x = 1,310,206.20 × 520,051.60 - Step 4: Simplify right side
875,220.40x = 681,374,830,639.92 - Step 5: Solve for x
x = 681,374,830,639.92/875,220.40 - Step 6: Final answer
x = 778,517.99
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1.5x scale
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.