Finding the Fourth Proportional to 839,809,828.80, 1,259,714,743.20 and 409,828,132.80
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Solution
The fourth proportional to 839,809,828.80, 1,259,714,743.20 and 409,828,132.80 is: 614,742,199.20
Step by Step Solution
- Step 1: Write the proportion equation
839,809,828.80 : 1,259,714,743.20 = 409,828,132.80 : x - Step 2: Convert to fraction form
839,809,828.80/1,259,714,743.20 = 409,828,132.80/x - Step 3: Cross multiply
839,809,828.80x = 1,259,714,743.20 × 409,828,132.80 - Step 4: Simplify right side
839,809,828.80x = 516,266,541,066,287,552 - Step 5: Solve for x
x = 516,266,541,066,287,552/839,809,828.80 - Step 6: Final answer
x = 614,742,199.20
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Similar ratio
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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.