Finding the Fourth Proportional to 839,809,711.30, 1,259,714,566.95 and 409,828,015.30
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Solution
The fourth proportional to 839,809,711.30, 1,259,714,566.95 and 409,828,015.30 is: 614,742,022.95
Step by Step Solution
- Step 1: Write the proportion equation
839,809,711.30 : 1,259,714,566.95 = 409,828,015.30 : x - Step 2: Convert to fraction form
839,809,711.30/1,259,714,566.95 = 409,828,015.30/x - Step 3: Cross multiply
839,809,711.30x = 1,259,714,566.95 × 409,828,015.30 - Step 4: Simplify right side
839,809,711.30x = 516,266,320,817,617,536 - Step 5: Solve for x
x = 516,266,320,817,617,536/839,809,711.30 - Step 6: Final answer
x = 614,742,022.95
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Double scale
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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.