Finding the Fourth Proportional to 861,885.46, 1,292,828.19 and 440,931.70
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Solution
The fourth proportional to 861,885.46, 1,292,828.19 and 440,931.70 is: 661,397.55
Step by Step Solution
- Step 1: Write the proportion equation
861,885.46 : 1,292,828.19 = 440,931.70 : x - Step 2: Convert to fraction form
861,885.46/1,292,828.19 = 440,931.70/x - Step 3: Cross multiply
861,885.46x = 1,292,828.19 × 440,931.70 - Step 4: Simplify right side
861,885.46x = 570,048,931,624.62 - Step 5: Solve for x
x = 570,048,931,624.62/861,885.46 - Step 6: Final answer
x = 661,397.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.