Finding the Fourth Proportional to 726,996,905.80, 1,090,495,358.70 and 612,205,649.80
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Solution
The fourth proportional to 726,996,905.80, 1,090,495,358.70 and 612,205,649.80 is: 918,308,474.70
Step by Step Solution
- Step 1: Write the proportion equation
726,996,905.80 : 1,090,495,358.70 = 612,205,649.80 : x - Step 2: Convert to fraction form
726,996,905.80/1,090,495,358.70 = 612,205,649.80/x - Step 3: Cross multiply
726,996,905.80x = 1,090,495,358.70 × 612,205,649.80 - Step 4: Simplify right side
726,996,905.80x = 667,607,419,676,817,536 - Step 5: Solve for x
x = 667,607,419,676,817,536/726,996,905.80 - Step 6: Final answer
x = 918,308,474.70
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Similar ratio
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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.