Finding the Fourth Proportional to 639,013.46, 953,287.08 and 621,639.09
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Solution
The fourth proportional to 639,013.46, 953,287.08 and 621,639.09 is: 927,367.81
Step by Step Solution
- Step 1: Write the proportion equation
639,013.46 : 953,287.08 = 621,639.09 : x - Step 2: Convert to fraction form
639,013.46/953,287.08 = 621,639.09/x - Step 3: Cross multiply
639,013.46x = 953,287.08 × 621,639.09 - Step 4: Simplify right side
639,013.46x = 592,600,510,588.81 - Step 5: Solve for x
x = 592,600,510,588.81/639,013.46 - Step 6: Final answer
x = 927,367.81
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.