Finding the Fourth Proportional to 1,138,688,658.83, 1,708,107,933.63 and 298,351,979.09
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Solution
The fourth proportional to 1,138,688,658.83, 1,708,107,933.63 and 298,351,979.09 is: 447,547,605.34
Step by Step Solution
- Step 1: Write the proportion equation
1,138,688,658.83 : 1,708,107,933.63 = 298,351,979.09 : x - Step 2: Convert to fraction form
1,138,688,658.83/1,708,107,933.63 = 298,351,979.09/x - Step 3: Cross multiply
1,138,688,658.83x = 1,708,107,933.63 × 298,351,979.09 - Step 4: Simplify right side
1,138,688,658.83x = 509,617,382,489,300,352 - Step 5: Solve for x
x = 509,617,382,489,300,352/1,138,688,658.83 - Step 6: Final answer
x = 447,547,605.34
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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.