Finding the Fourth Proportional to 1,787,972.40, 2,681,987.76 and 440,138.88
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Solution
The fourth proportional to 1,787,972.40, 2,681,987.76 and 440,138.88 is: 660,215.50
Step by Step Solution
- Step 1: Write the proportion equation
1,787,972.40 : 2,681,987.76 = 440,138.88 : x - Step 2: Convert to fraction form
1,787,972.40/2,681,987.76 = 440,138.88/x - Step 3: Cross multiply
1,787,972.40x = 2,681,987.76 × 440,138.88 - Step 4: Simplify right side
1,787,972.40x = 1,180,447,088,860.11 - Step 5: Solve for x
x = 1,180,447,088,860.11/1,787,972.40 - Step 6: Final answer
x = 660,215.50
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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.