Finding the Fourth Proportional to 1,990,754,374.40, 2,986,579,459.20 and 1,172,445,459.20
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Solution
The fourth proportional to 1,990,754,374.40, 2,986,579,459.20 and 1,172,445,459.20 is: 1,758,931,975.99
Step by Step Solution
- Step 1: Write the proportion equation
1,990,754,374.40 : 2,986,579,459.20 = 1,172,445,459.20 : x - Step 2: Convert to fraction form
1,990,754,374.40/2,986,579,459.20 = 1,172,445,459.20/x - Step 3: Cross multiply
1,990,754,374.40x = 2,986,579,459.20 × 1,172,445,459.20 - Step 4: Simplify right side
1,990,754,374.40x = 3,501,601,525,479,031,808 - Step 5: Solve for x
x = 3,501,601,525,479,031,808/1,990,754,374.40 - Step 6: Final answer
x = 1,758,931,975.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.