Finding the Fourth Proportional to 420,717,485.12, 631,107,958.20 and 125,589,303.44
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Solution
The fourth proportional to 420,717,485.12, 631,107,958.20 and 125,589,303.44 is: 188,393,427.11
Step by Step Solution
- Step 1: Write the proportion equation
420,717,485.12 : 631,107,958.20 = 125,589,303.44 : x - Step 2: Convert to fraction form
420,717,485.12/631,107,958.20 = 125,589,303.44/x - Step 3: Cross multiply
420,717,485.12x = 631,107,958.20 × 125,589,303.44 - Step 4: Simplify right side
420,717,485.12x = 79,260,408,865,778,640 - Step 5: Solve for x
x = 79,260,408,865,778,640/420,717,485.12 - Step 6: Final answer
x = 188,393,427.11
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.