Finding the Fourth Proportional to 630,050,381.12, 869,412,795.36 and 395,025,913.28
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Solution
The fourth proportional to 630,050,381.12, 869,412,795.36 and 395,025,913.28 is: 545,100,191.66
Step by Step Solution
- Step 1: Write the proportion equation
630,050,381.12 : 869,412,795.36 = 395,025,913.28 : x - Step 2: Convert to fraction form
630,050,381.12/869,412,795.36 = 395,025,913.28/x - Step 3: Cross multiply
630,050,381.12x = 869,412,795.36 × 395,025,913.28 - Step 4: Simplify right side
630,050,381.12x = 343,440,583,504,401,728 - Step 5: Solve for x
x = 343,440,583,504,401,728/630,050,381.12 - Step 6: Final answer
x = 545,100,191.66
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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.