Finding the Fourth Proportional to 1,124,811.40, 1,687,365.10 and 415,337.80
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Solution
The fourth proportional to 1,124,811.40, 1,687,365.10 and 415,337.80 is: 623,061.35
Step by Step Solution
- Step 1: Write the proportion equation
1,124,811.40 : 1,687,365.10 = 415,337.80 : x - Step 2: Convert to fraction form
1,124,811.40/1,687,365.10 = 415,337.80/x - Step 3: Cross multiply
1,124,811.40x = 1,687,365.10 × 415,337.80 - Step 4: Simplify right side
1,124,811.40x = 700,826,508,430.78 - Step 5: Solve for x
x = 700,826,508,430.78/1,124,811.40 - Step 6: Final answer
x = 623,061.35
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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.