Finding the Fourth Proportional to 1,645,065.40, 2,270,174.70 and 919,904.80
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Solution
The fourth proportional to 1,645,065.40, 2,270,174.70 and 919,904.80 is: 1,269,459.93
Step by Step Solution
- Step 1: Write the proportion equation
1,645,065.40 : 2,270,174.70 = 919,904.80 : x - Step 2: Convert to fraction form
1,645,065.40/2,270,174.70 = 919,904.80/x - Step 3: Cross multiply
1,645,065.40x = 2,270,174.70 × 919,904.80 - Step 4: Simplify right side
1,645,065.40x = 2,088,344,603,368.56 - Step 5: Solve for x
x = 2,088,344,603,368.56/1,645,065.40 - Step 6: Final answer
x = 1,269,459.93
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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.