Finding the Fourth Proportional to 645,065.19, 890,190.99 and 358,582.77
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Solution
The fourth proportional to 645,065.19, 890,190.99 and 358,582.77 is: 494,844.79
Step by Step Solution
- Step 1: Write the proportion equation
645,065.19 : 890,190.99 = 358,582.77 : x - Step 2: Convert to fraction form
645,065.19/890,190.99 = 358,582.77/x - Step 3: Cross multiply
645,065.19x = 890,190.99 × 358,582.77 - Step 4: Simplify right side
645,065.19x = 319,207,151,023.24 - Step 5: Solve for x
x = 319,207,151,023.24/645,065.19 - Step 6: Final answer
x = 494,844.79
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1.5x scale
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.