Finding the Fourth Proportional to 866,189,968.80, 1,299,603,817.80 and 283,943,209.20
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Solution
The fourth proportional to 866,189,968.80, 1,299,603,817.80 and 283,943,209.20 is: 426,019,339.88
Step by Step Solution
- Step 1: Write the proportion equation
866,189,968.80 : 1,299,603,817.80 = 283,943,209.20 : x - Step 2: Convert to fraction form
866,189,968.80/1,299,603,817.80 = 283,943,209.20/x - Step 3: Cross multiply
866,189,968.80x = 1,299,603,817.80 × 283,943,209.20 - Step 4: Simplify right side
866,189,968.80x = 369,013,678,714,704,064 - Step 5: Solve for x
x = 369,013,678,714,704,064/866,189,968.80 - Step 6: Final answer
x = 426,019,339.88
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1.5x scale
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.