Finding the Fourth Proportional to 667,242,997.12, 920,795,321.39 and 369,884,485.79
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Solution
The fourth proportional to 667,242,997.12, 920,795,321.39 and 369,884,485.79 is: 510,440,582.27
Step by Step Solution
- Step 1: Write the proportion equation
667,242,997.12 : 920,795,321.39 = 369,884,485.79 : x - Step 2: Convert to fraction form
667,242,997.12/920,795,321.39 = 369,884,485.79/x - Step 3: Cross multiply
667,242,997.12x = 920,795,321.39 × 369,884,485.79 - Step 4: Simplify right side
667,242,997.12x = 340,587,903,963,724,544 - Step 5: Solve for x
x = 340,587,903,963,724,544/667,242,997.12 - Step 6: Final answer
x = 510,440,582.27
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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.