Finding the Fourth Proportional to 1,990,417,097.80, 2,985,625,646.70 and 1,266,614,576.20
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Solution
The fourth proportional to 1,990,417,097.80, 2,985,625,646.70 and 1,266,614,576.20 is: 1,899,921,864.30
Step by Step Solution
- Step 1: Write the proportion equation
1,990,417,097.80 : 2,985,625,646.70 = 1,266,614,576.20 : x - Step 2: Convert to fraction form
1,990,417,097.80/2,985,625,646.70 = 1,266,614,576.20/x - Step 3: Cross multiply
1,990,417,097.80x = 2,985,625,646.70 × 1,266,614,576.20 - Step 4: Simplify right side
1,990,417,097.80x = 3,781,636,963,186,771,456 - Step 5: Solve for x
x = 3,781,636,963,186,771,456/1,990,417,097.80 - Step 6: Final answer
x = 1,899,921,864.30
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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.