Finding the Fourth Proportional to 879,536,660.80, 1,319,304,991.20 and 621,547,643.20
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Solution
The fourth proportional to 879,536,660.80, 1,319,304,991.20 and 621,547,643.20 is: 932,321,464.80
Step by Step Solution
- Step 1: Write the proportion equation
879,536,660.80 : 1,319,304,991.20 = 621,547,643.20 : x - Step 2: Convert to fraction form
879,536,660.80/1,319,304,991.20 = 621,547,643.20/x - Step 3: Cross multiply
879,536,660.80x = 1,319,304,991.20 × 621,547,643.20 - Step 4: Simplify right side
879,536,660.80x = 820,010,907,942,356,864 - Step 5: Solve for x
x = 820,010,907,942,356,864/879,536,660.80 - Step 6: Final answer
x = 932,321,464.80
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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.