Finding the Fourth Proportional to 1,214,544,812.40, 1,821,817,218.60 and 755,379,788.40
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Solution
The fourth proportional to 1,214,544,812.40, 1,821,817,218.60 and 755,379,788.40 is: 1,133,069,682.60
Step by Step Solution
- Step 1: Write the proportion equation
1,214,544,812.40 : 1,821,817,218.60 = 755,379,788.40 : x - Step 2: Convert to fraction form
1,214,544,812.40/1,821,817,218.60 = 755,379,788.40/x - Step 3: Cross multiply
1,214,544,812.40x = 1,821,817,218.60 × 755,379,788.40 - Step 4: Simplify right side
1,214,544,812.40x = 1,376,163,905,089,544,448 - Step 5: Solve for x
x = 1,376,163,905,089,544,448/1,214,544,812.40 - Step 6: Final answer
x = 1,133,069,682.60
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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.