Finding the Fourth Proportional to 1,119,745,125.60, 1,679,617,688.40 and 392,733,837.60
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Solution
The fourth proportional to 1,119,745,125.60, 1,679,617,688.40 and 392,733,837.60 is: 589,100,756.40
Step by Step Solution
- Step 1: Write the proportion equation
1,119,745,125.60 : 1,679,617,688.40 = 392,733,837.60 : x - Step 2: Convert to fraction form
1,119,745,125.60/1,679,617,688.40 = 392,733,837.60/x - Step 3: Cross multiply
1,119,745,125.60x = 1,679,617,688.40 × 392,733,837.60 - Step 4: Simplify right side
1,119,745,125.60x = 659,642,700,466,173,056 - Step 5: Solve for x
x = 659,642,700,466,173,056/1,119,745,125.60 - Step 6: Final answer
x = 589,100,756.40
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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.