Finding the Fourth Proportional to 939,847,297.12, 1,296,913,138.32 and 543,395,747.68
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Solution
The fourth proportional to 939,847,297.12, 1,296,913,138.32 and 543,395,747.68 is: 749,842,114.39
Step by Step Solution
- Step 1: Write the proportion equation
939,847,297.12 : 1,296,913,138.32 = 543,395,747.68 : x - Step 2: Convert to fraction form
939,847,297.12/1,296,913,138.32 = 543,395,747.68/x - Step 3: Cross multiply
939,847,297.12x = 1,296,913,138.32 × 543,395,747.68 - Step 4: Simplify right side
939,847,297.12x = 704,737,084,473,411,584 - Step 5: Solve for x
x = 704,737,084,473,411,584/939,847,297.12 - Step 6: Final answer
x = 749,842,114.39
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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.