Finding the Fourth Proportional to 421,134,839.70, 631,702,259.55 and 421,134,839.70
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Solution
The fourth proportional to 421,134,839.70, 631,702,259.55 and 421,134,839.70 is: 631,702,259.55
Step by Step Solution
- Step 1: Write the proportion equation
421,134,839.70 : 631,702,259.55 = 421,134,839.70 : x - Step 2: Convert to fraction form
421,134,839.70/631,702,259.55 = 421,134,839.70/x - Step 3: Cross multiply
421,134,839.70x = 631,702,259.55 × 421,134,839.70 - Step 4: Simplify right side
421,134,839.70x = 266,031,829,813,717,024 - Step 5: Solve for x
x = 266,031,829,813,717,024/421,134,839.70 - Step 6: Final answer
x = 631,702,259.55
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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.