Finding the Fourth Proportional to 1,328,605,689.20, 1,992,908,533.80 and 812,045,037.20
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Solution
The fourth proportional to 1,328,605,689.20, 1,992,908,533.80 and 812,045,037.20 is: 1,218,067,555.80
Step by Step Solution
- Step 1: Write the proportion equation
1,328,605,689.20 : 1,992,908,533.80 = 812,045,037.20 : x - Step 2: Convert to fraction form
1,328,605,689.20/1,992,908,533.80 = 812,045,037.20/x - Step 3: Cross multiply
1,328,605,689.20x = 1,992,908,533.80 × 812,045,037.20 - Step 4: Simplify right side
1,328,605,689.20x = 1,618,331,484,465,818,624 - Step 5: Solve for x
x = 1,618,331,484,465,818,624/1,328,605,689.20 - Step 6: Final answer
x = 1,218,067,555.80
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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.