Finding the Fourth Proportional to 990,452,721.60, 1,482,151,888.80 and 862,465,982.40
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Solution
The fourth proportional to 990,452,721.60, 1,482,151,888.80 and 862,465,982.40 is: 1,290,627,565.52
Step by Step Solution
- Step 1: Write the proportion equation
990,452,721.60 : 1,482,151,888.80 = 862,465,982.40 : x - Step 2: Convert to fraction form
990,452,721.60/1,482,151,888.80 = 862,465,982.40/x - Step 3: Cross multiply
990,452,721.60x = 1,482,151,888.80 × 862,465,982.40 - Step 4: Simplify right side
990,452,721.60x = 1,278,305,584,839,907,584 - Step 5: Solve for x
x = 1,278,305,584,839,907,584/990,452,721.60 - Step 6: Final answer
x = 1,290,627,565.52
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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.