Finding the Fourth Proportional to 811,152,959.76, 1,216,716,143.36 and 258,447,879.95
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Solution
The fourth proportional to 811,152,959.76, 1,216,716,143.36 and 258,447,879.95 is: 387,667,583.50
Step by Step Solution
- Step 1: Write the proportion equation
811,152,959.76 : 1,216,716,143.36 = 258,447,879.95 : x - Step 2: Convert to fraction form
811,152,959.76/1,216,716,143.36 = 258,447,879.95/x - Step 3: Cross multiply
811,152,959.76x = 1,216,716,143.36 × 258,447,879.95 - Step 4: Simplify right side
811,152,959.76x = 314,457,707,754,547,008 - Step 5: Solve for x
x = 314,457,707,754,547,008/811,152,959.76 - Step 6: Final answer
x = 387,667,583.50
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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.