Finding the Fourth Proportional to 828,972,457.20, 1,243,458,685.80 and 704,136,966.30
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Solution
The fourth proportional to 828,972,457.20, 1,243,458,685.80 and 704,136,966.30 is: 1,056,205,449.45
Step by Step Solution
- Step 1: Write the proportion equation
828,972,457.20 : 1,243,458,685.80 = 704,136,966.30 : x - Step 2: Convert to fraction form
828,972,457.20/1,243,458,685.80 = 704,136,966.30/x - Step 3: Cross multiply
828,972,457.20x = 1,243,458,685.80 × 704,136,966.30 - Step 4: Simplify right side
828,972,457.20x = 875,565,226,738,596,736 - Step 5: Solve for x
x = 875,565,226,738,596,736/828,972,457.20 - Step 6: Final answer
x = 1,056,205,449.45
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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.