Finding the Fourth Proportional to 389,451,875.40, 584,177,813.10 and 130,675,537.80
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Solution
The fourth proportional to 389,451,875.40, 584,177,813.10 and 130,675,537.80 is: 196,013,306.70
Step by Step Solution
- Step 1: Write the proportion equation
389,451,875.40 : 584,177,813.10 = 130,675,537.80 : x - Step 2: Convert to fraction form
389,451,875.40/584,177,813.10 = 130,675,537.80/x - Step 3: Cross multiply
389,451,875.40x = 584,177,813.10 × 130,675,537.80 - Step 4: Simplify right side
389,451,875.40x = 76,337,749,897,670,384 - Step 5: Solve for x
x = 76,337,749,897,670,384/389,451,875.40 - Step 6: Final answer
x = 196,013,306.70
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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.