Finding the Fourth Proportional to 391,064.71, 539,390.51 and 358,902.99
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Solution
The fourth proportional to 391,064.71, 539,390.51 and 358,902.99 is: 495,030.27
Step by Step Solution
- Step 1: Write the proportion equation
391,064.71 : 539,390.51 = 358,902.99 : x - Step 2: Convert to fraction form
391,064.71/539,390.51 = 358,902.99/x - Step 3: Cross multiply
391,064.71x = 539,390.51 × 358,902.99 - Step 4: Simplify right side
391,064.71x = 193,588,865,022.11 - Step 5: Solve for x
x = 193,588,865,022.11/391,064.71 - Step 6: Final answer
x = 495,030.27
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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.