Finding the Fourth Proportional to 825,385.14, 1,138,547.70 and 518,975.91
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Solution
The fourth proportional to 825,385.14, 1,138,547.70 and 518,975.91 is: 715,882.56
Step by Step Solution
- Step 1: Write the proportion equation
825,385.14 : 1,138,547.70 = 518,975.91 : x - Step 2: Convert to fraction form
825,385.14/1,138,547.70 = 518,975.91/x - Step 3: Cross multiply
825,385.14x = 1,138,547.70 × 518,975.91 - Step 4: Simplify right side
825,385.14x = 590,878,828,685.91 - Step 5: Solve for x
x = 590,878,828,685.91/825,385.14 - Step 6: Final answer
x = 715,882.56
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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.