Finding the Fourth Proportional to 438,990,391.20, 658,485,240.88 and 132,282,507.68
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Solution
The fourth proportional to 438,990,391.20, 658,485,240.88 and 132,282,507.68 is: 198,423,657.28
Step by Step Solution
- Step 1: Write the proportion equation
438,990,391.20 : 658,485,240.88 = 132,282,507.68 : x - Step 2: Convert to fraction form
438,990,391.20/658,485,240.88 = 132,282,507.68/x - Step 3: Cross multiply
438,990,391.20x = 658,485,240.88 × 132,282,507.68 - Step 4: Simplify right side
438,990,391.20x = 87,106,078,933,875,248 - Step 5: Solve for x
x = 87,106,078,933,875,248/438,990,391.20 - Step 6: Final answer
x = 198,423,657.28
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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.