Finding the Fourth Proportional to 1,213,455,988.80, 1,820,183,983.20 and 1,201,362,753.60
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Solution
The fourth proportional to 1,213,455,988.80, 1,820,183,983.20 and 1,201,362,753.60 is: 1,802,044,130.40
Step by Step Solution
- Step 1: Write the proportion equation
1,213,455,988.80 : 1,820,183,983.20 = 1,201,362,753.60 : x - Step 2: Convert to fraction form
1,213,455,988.80/1,820,183,983.20 = 1,201,362,753.60/x - Step 3: Cross multiply
1,213,455,988.80x = 1,820,183,983.20 × 1,201,362,753.60 - Step 4: Simplify right side
1,213,455,988.80x = 2,186,701,242,115,768,064 - Step 5: Solve for x
x = 2,186,701,242,115,768,064/1,213,455,988.80 - Step 6: Final answer
x = 1,802,044,130.40
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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.