Finding the Fourth Proportional to 787,968,803.20, 1,181,953,204.80 and 357,987,107.20
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Solution
The fourth proportional to 787,968,803.20, 1,181,953,204.80 and 357,987,107.20 is: 536,980,660.80
Step by Step Solution
- Step 1: Write the proportion equation
787,968,803.20 : 1,181,953,204.80 = 357,987,107.20 : x - Step 2: Convert to fraction form
787,968,803.20/1,181,953,204.80 = 357,987,107.20/x - Step 3: Cross multiply
787,968,803.20x = 1,181,953,204.80 × 357,987,107.20 - Step 4: Simplify right side
787,968,803.20x = 423,124,008,632,121,152 - Step 5: Solve for x
x = 423,124,008,632,121,152/787,968,803.20 - Step 6: Final answer
x = 536,980,660.80
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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.