Finding the Fourth Proportional to 840,715.91, 1,160,215.95 and 458,763.65
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Solution
The fourth proportional to 840,715.91, 1,160,215.95 and 458,763.65 is: 633,109.11
Step by Step Solution
- Step 1: Write the proportion equation
840,715.91 : 1,160,215.95 = 458,763.65 : x - Step 2: Convert to fraction form
840,715.91/1,160,215.95 = 458,763.65/x - Step 3: Cross multiply
840,715.91x = 1,160,215.95 × 458,763.65 - Step 4: Simplify right side
840,715.91x = 532,264,904,010.22 - Step 5: Solve for x
x = 532,264,904,010.22/840,715.91 - Step 6: Final answer
x = 633,109.11
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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.