Finding the Fourth Proportional to 726,996,911.30, 1,090,495,366.95 and 612,205,655.30
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Solution
The fourth proportional to 726,996,911.30, 1,090,495,366.95 and 612,205,655.30 is: 918,308,482.95
Step by Step Solution
- Step 1: Write the proportion equation
726,996,911.30 : 1,090,495,366.95 = 612,205,655.30 : x - Step 2: Convert to fraction form
726,996,911.30/1,090,495,366.95 = 612,205,655.30/x - Step 3: Cross multiply
726,996,911.30x = 1,090,495,366.95 × 612,205,655.30 - Step 4: Simplify right side
726,996,911.30x = 667,607,430,725,238,656 - Step 5: Solve for x
x = 667,607,430,725,238,656/726,996,911.30 - Step 6: Final answer
x = 918,308,482.95
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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.