Finding the Fourth Proportional to 1,181,619,937.56, 1,630,640,505.42 and 645,782,542.68
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Solution
The fourth proportional to 1,181,619,937.56, 1,630,640,505.42 and 645,782,542.68 is: 891,182,636.92
Step by Step Solution
- Step 1: Write the proportion equation
1,181,619,937.56 : 1,630,640,505.42 = 645,782,542.68 : x - Step 2: Convert to fraction form
1,181,619,937.56/1,630,640,505.42 = 645,782,542.68/x - Step 3: Cross multiply
1,181,619,937.56x = 1,630,640,505.42 × 645,782,542.68 - Step 4: Simplify right side
1,181,619,937.56x = 1,053,039,171,787,127,936 - Step 5: Solve for x
x = 1,053,039,171,787,127,936/1,181,619,937.56 - Step 6: Final answer
x = 891,182,636.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.