Finding the Fourth Proportional to 1,310,554,163.35, 1,808,553,997.38 and 715,839,026.95
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Solution
The fourth proportional to 1,310,554,163.35, 1,808,553,997.38 and 715,839,026.95 is: 987,851,986.49
Step by Step Solution
- Step 1: Write the proportion equation
1,310,554,163.35 : 1,808,553,997.38 = 715,839,026.95 : x - Step 2: Convert to fraction form
1,310,554,163.35/1,808,553,997.38 = 715,839,026.95/x - Step 3: Cross multiply
1,310,554,163.35x = 1,808,553,997.38 × 715,839,026.95 - Step 4: Simplify right side
1,310,554,163.35x = 1,294,633,533,671,032,320 - Step 5: Solve for x
x = 1,294,633,533,671,032,320/1,310,554,163.35 - Step 6: Final answer
x = 987,851,986.49
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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.