Finding the Fourth Proportional to 530,786.09, 732,479.70 and 289,072.70
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Solution
The fourth proportional to 530,786.09, 732,479.70 and 289,072.70 is: 398,917.55
Step by Step Solution
- Step 1: Write the proportion equation
530,786.09 : 732,479.70 = 289,072.70 : x - Step 2: Convert to fraction form
530,786.09/732,479.70 = 289,072.70/x - Step 3: Cross multiply
530,786.09x = 732,479.70 × 289,072.70 - Step 4: Simplify right side
530,786.09x = 211,739,884,574.19 - Step 5: Solve for x
x = 211,739,884,574.19/530,786.09 - Step 6: Final answer
x = 398,917.55
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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.