Finding the Fourth Proportional to 821,913.97, 1,134,590.43 and 499,726.93
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Solution
The fourth proportional to 821,913.97, 1,134,590.43 and 499,726.93 is: 689,835.45
Step by Step Solution
- Step 1: Write the proportion equation
821,913.97 : 1,134,590.43 = 499,726.93 : x - Step 2: Convert to fraction form
821,913.97/1,134,590.43 = 499,726.93/x - Step 3: Cross multiply
821,913.97x = 1,134,590.43 × 499,726.93 - Step 4: Simplify right side
821,913.97x = 566,985,392,391.28 - Step 5: Solve for x
x = 566,985,392,391.28/821,913.97 - Step 6: Final answer
x = 689,835.45
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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.