Finding the Fourth Proportional to 809,511,977.70, 1,117,126,902.98 and 438,234,009.08
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Solution
The fourth proportional to 809,511,977.70, 1,117,126,902.98 and 438,234,009.08 is: 604,763,134.86
Step by Step Solution
- Step 1: Write the proportion equation
809,511,977.70 : 1,117,126,902.98 = 438,234,009.08 : x - Step 2: Convert to fraction form
809,511,977.70/1,117,126,902.98 = 438,234,009.08/x - Step 3: Cross multiply
809,511,977.70x = 1,117,126,902.98 × 438,234,009.08 - Step 4: Simplify right side
809,511,977.70x = 489,563,001,344,049,600 - Step 5: Solve for x
x = 489,563,001,344,049,600/809,511,977.70 - Step 6: Final answer
x = 604,763,134.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.