Finding the Fourth Proportional to 726,769,748.80, 1,090,154,623.20 and 646,415,869.60
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Solution
The fourth proportional to 726,769,748.80, 1,090,154,623.20 and 646,415,869.60 is: 969,623,804.40
Step by Step Solution
- Step 1: Write the proportion equation
726,769,748.80 : 1,090,154,623.20 = 646,415,869.60 : x - Step 2: Convert to fraction form
726,769,748.80/1,090,154,623.20 = 646,415,869.60/x - Step 3: Cross multiply
726,769,748.80x = 1,090,154,623.20 × 646,415,869.60 - Step 4: Simplify right side
726,769,748.80x = 704,693,248,754,288,384 - Step 5: Solve for x
x = 704,693,248,754,288,384/726,769,748.80 - Step 6: Final answer
x = 969,623,804.40
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1.5x scale
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.