Finding the Fourth Proportional to 435,465,862.20, 653,198,793.30 and 128,730,655.80
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Solution
The fourth proportional to 435,465,862.20, 653,198,793.30 and 128,730,655.80 is: 193,095,983.70
Step by Step Solution
- Step 1: Write the proportion equation
435,465,862.20 : 653,198,793.30 = 128,730,655.80 : x - Step 2: Convert to fraction form
435,465,862.20/653,198,793.30 = 128,730,655.80/x - Step 3: Cross multiply
435,465,862.20x = 653,198,793.30 × 128,730,655.80 - Step 4: Simplify right side
435,465,862.20x = 84,086,709,029,277,632 - Step 5: Solve for x
x = 84,086,709,029,277,632/435,465,862.20 - Step 6: Final answer
x = 193,095,983.70
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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.