Finding the Fourth Proportional to 660,830,913.37, 991,359,299.49 and 272,441,430.28
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Solution
The fourth proportional to 660,830,913.37, 991,359,299.49 and 272,441,430.28 is: 408,708,702.95
Step by Step Solution
- Step 1: Write the proportion equation
660,830,913.37 : 991,359,299.49 = 272,441,430.28 : x - Step 2: Convert to fraction form
660,830,913.37/991,359,299.49 = 272,441,430.28/x - Step 3: Cross multiply
660,830,913.37x = 991,359,299.49 × 272,441,430.28 - Step 4: Simplify right side
660,830,913.37x = 270,087,345,474,434,464 - Step 5: Solve for x
x = 270,087,345,474,434,464/660,830,913.37 - Step 6: Final answer
x = 408,708,702.95
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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.