Finding the Fourth Proportional to 1,430,417.34, 1,971,604.80 and 1,392,554.97
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Solution
The fourth proportional to 1,430,417.34, 1,971,604.80 and 1,392,554.97 is: 1,919,417.49
Step by Step Solution
- Step 1: Write the proportion equation
1,430,417.34 : 1,971,604.80 = 1,392,554.97 : x - Step 2: Convert to fraction form
1,430,417.34/1,971,604.80 = 1,392,554.97/x - Step 3: Cross multiply
1,430,417.34x = 1,971,604.80 × 1,392,554.97 - Step 4: Simplify right side
1,430,417.34x = 2,745,568,063,115.86 - Step 5: Solve for x
x = 2,745,568,063,115.86/1,430,417.34 - Step 6: Final answer
x = 1,919,417.49
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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.