Finding the Fourth Proportional to 1,207,227,416.60, 1,810,841,124.90 and 430,898,403.80
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Solution
The fourth proportional to 1,207,227,416.60, 1,810,841,124.90 and 430,898,403.80 is: 646,347,605.70
Step by Step Solution
- Step 1: Write the proportion equation
1,207,227,416.60 : 1,810,841,124.90 = 430,898,403.80 : x - Step 2: Convert to fraction form
1,207,227,416.60/1,810,841,124.90 = 430,898,403.80/x - Step 3: Cross multiply
1,207,227,416.60x = 1,810,841,124.90 × 430,898,403.80 - Step 4: Simplify right side
1,207,227,416.60x = 780,288,550,254,806,528 - Step 5: Solve for x
x = 780,288,550,254,806,528/1,207,227,416.60 - Step 6: Final answer
x = 646,347,605.70
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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.