Finding the Fourth Proportional to 1,119,256,112.80, 1,678,884,169.20 and 915,014,807.20
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Solution
The fourth proportional to 1,119,256,112.80, 1,678,884,169.20 and 915,014,807.20 is: 1,372,522,210.80
Step by Step Solution
- Step 1: Write the proportion equation
1,119,256,112.80 : 1,678,884,169.20 = 915,014,807.20 : x - Step 2: Convert to fraction form
1,119,256,112.80/1,678,884,169.20 = 915,014,807.20/x - Step 3: Cross multiply
1,119,256,112.80x = 1,678,884,169.20 × 915,014,807.20 - Step 4: Simplify right side
1,119,256,112.80x = 1,536,203,874,391,670,272 - Step 5: Solve for x
x = 1,536,203,874,391,670,272/1,119,256,112.80 - Step 6: Final answer
x = 1,372,522,210.80
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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.