Finding the Fourth Proportional to 1,423,478,449.20, 2,135,539,644 and 768,415,416.12
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Solution
The fourth proportional to 1,423,478,449.20, 2,135,539,644 and 768,415,416.12 is: 1,152,796,928.61
Step by Step Solution
- Step 1: Write the proportion equation
1,423,478,449.20 : 2,135,539,644 = 768,415,416.12 : x - Step 2: Convert to fraction form
1,423,478,449.20/2,135,539,644 = 768,415,416.12/x - Step 3: Cross multiply
1,423,478,449.20x = 2,135,539,644 × 768,415,416.12 - Step 4: Simplify right side
1,423,478,449.20x = 1,640,981,584,185,016,576 - Step 5: Solve for x
x = 1,640,981,584,185,016,576/1,423,478,449.20 - Step 6: Final answer
x = 1,152,796,928.61
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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.