Finding the Fourth Proportional to 421,134,657.20, 631,701,985.80 and 421,134,657.20
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Solution
The fourth proportional to 421,134,657.20, 631,701,985.80 and 421,134,657.20 is: 631,701,985.80
Step by Step Solution
- Step 1: Write the proportion equation
421,134,657.20 : 631,701,985.80 = 421,134,657.20 : x - Step 2: Convert to fraction form
421,134,657.20/631,701,985.80 = 421,134,657.20/x - Step 3: Cross multiply
421,134,657.20x = 631,701,985.80 × 421,134,657.20 - Step 4: Simplify right side
421,134,657.20x = 266,031,599,242,442,240 - Step 5: Solve for x
x = 266,031,599,242,442,240/421,134,657.20 - Step 6: Final answer
x = 631,701,985.80
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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.