Finding the Fourth Proportional to 1,423,959,542.97, 2,136,553,128.81 and 768,780,477.75
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Solution
The fourth proportional to 1,423,959,542.97, 2,136,553,128.81 and 768,780,477.75 is: 1,153,502,108.41
Step by Step Solution
- Step 1: Write the proportion equation
1,423,959,542.97 : 2,136,553,128.81 = 768,780,477.75 : x - Step 2: Convert to fraction form
1,423,959,542.97/2,136,553,128.81 = 768,780,477.75/x - Step 3: Cross multiply
1,423,959,542.97x = 2,136,553,128.81 × 768,780,477.75 - Step 4: Simplify right side
1,423,959,542.97x = 1,642,540,335,104,808,960 - Step 5: Solve for x
x = 1,642,540,335,104,808,960/1,423,959,542.97 - Step 6: Final answer
x = 1,153,502,108.41
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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.