Finding the Fourth Proportional to 1,405,451,050.16, 1,939,522,633.06 and 778,959,924.62
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Solution
The fourth proportional to 1,405,451,050.16, 1,939,522,633.06 and 778,959,924.62 is: 1,074,964,797.87
Step by Step Solution
- Step 1: Write the proportion equation
1,405,451,050.16 : 1,939,522,633.06 = 778,959,924.62 : x - Step 2: Convert to fraction form
1,405,451,050.16/1,939,522,633.06 = 778,959,924.62/x - Step 3: Cross multiply
1,405,451,050.16x = 1,939,522,633.06 × 778,959,924.62 - Step 4: Simplify right side
1,405,451,050.16x = 1,510,810,404,047,201,536 - Step 5: Solve for x
x = 1,510,810,404,047,201,536/1,405,451,050.16 - Step 6: Final answer
x = 1,074,964,797.87
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.