Finding the Fourth Proportional to 1,310,536,015.08, 1,965,811,371.46 and 437,134,985.67
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Solution
The fourth proportional to 1,310,536,015.08, 1,965,811,371.46 and 437,134,985.67 is: 655,704,929.74
Step by Step Solution
- Step 1: Write the proportion equation
1,310,536,015.08 : 1,965,811,371.46 = 437,134,985.67 : x - Step 2: Convert to fraction form
1,310,536,015.08/1,965,811,371.46 = 437,134,985.67/x - Step 3: Cross multiply
1,310,536,015.08x = 1,965,811,371.46 × 437,134,985.67 - Step 4: Simplify right side
1,310,536,015.08x = 859,324,925,695,819,008 - Step 5: Solve for x
x = 859,324,925,695,819,008/1,310,536,015.08 - Step 6: Final answer
x = 655,704,929.74
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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.