Finding the Fourth Proportional to 645,865.97, 891,543.04 and 485,187.08
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Solution
The fourth proportional to 645,865.97, 891,543.04 and 485,187.08 is: 669,744.47
Step by Step Solution
- Step 1: Write the proportion equation
645,865.97 : 891,543.04 = 485,187.08 : x - Step 2: Convert to fraction form
645,865.97/891,543.04 = 485,187.08/x - Step 3: Cross multiply
645,865.97x = 891,543.04 × 485,187.08 - Step 4: Simplify right side
645,865.97x = 432,565,158,601.24 - Step 5: Solve for x
x = 432,565,158,601.24/645,865.97 - Step 6: Final answer
x = 669,744.47
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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.