Finding the Fourth Proportional to 780,207,301.20, 1,170,310,951.80 and 708,781,630.80
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Solution
The fourth proportional to 780,207,301.20, 1,170,310,951.80 and 708,781,630.80 is: 1,063,172,446.20
Step by Step Solution
- Step 1: Write the proportion equation
780,207,301.20 : 1,170,310,951.80 = 708,781,630.80 : x - Step 2: Convert to fraction form
780,207,301.20/1,170,310,951.80 = 708,781,630.80/x - Step 3: Cross multiply
780,207,301.20x = 1,170,310,951.80 × 708,781,630.80 - Step 4: Simplify right side
780,207,301.20x = 829,494,904,959,904,128 - Step 5: Solve for x
x = 829,494,904,959,904,128/780,207,301.20 - Step 6: Final answer
x = 1,063,172,446.20
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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.