Finding the Fourth Proportional to 811,395.14, 1,119,711.47 and 448,818.71
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Solution
The fourth proportional to 811,395.14, 1,119,711.47 and 448,818.71 is: 619,362.17
Step by Step Solution
- Step 1: Write the proportion equation
811,395.14 : 1,119,711.47 = 448,818.71 : x - Step 2: Convert to fraction form
811,395.14/1,119,711.47 = 448,818.71/x - Step 3: Cross multiply
811,395.14x = 1,119,711.47 × 448,818.71 - Step 4: Simplify right side
811,395.14x = 502,547,449,694.95 - Step 5: Solve for x
x = 502,547,449,694.95/811,395.14 - Step 6: Final answer
x = 619,362.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.