Finding the Fourth Proportional to 1,430,573,459.40, 2,145,962,340.98 and 381,306,166.91
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Solution
The fourth proportional to 1,430,573,459.40, 2,145,962,340.98 and 381,306,166.91 is: 571,986,478.01
Step by Step Solution
- Step 1: Write the proportion equation
1,430,573,459.40 : 2,145,962,340.98 = 381,306,166.91 : x - Step 2: Convert to fraction form
1,430,573,459.40/2,145,962,340.98 = 381,306,166.91/x - Step 3: Cross multiply
1,430,573,459.40x = 2,145,962,340.98 × 381,306,166.91 - Step 4: Simplify right side
1,430,573,459.40x = 818,268,674,571,251,328 - Step 5: Solve for x
x = 818,268,674,571,251,328/1,430,573,459.40 - Step 6: Final answer
x = 571,986,478.01
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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.