Finding the Fourth Proportional to 415,287,918.90, 622,931,878.35 and 347,767,355.70
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Solution
The fourth proportional to 415,287,918.90, 622,931,878.35 and 347,767,355.70 is: 521,651,033.55
Step by Step Solution
- Step 1: Write the proportion equation
415,287,918.90 : 622,931,878.35 = 347,767,355.70 : x - Step 2: Convert to fraction form
415,287,918.90/622,931,878.35 = 347,767,355.70/x - Step 3: Cross multiply
415,287,918.90x = 622,931,878.35 × 347,767,355.70 - Step 4: Simplify right side
415,287,918.90x = 216,635,372,115,013,568 - Step 5: Solve for x
x = 216,635,372,115,013,568/415,287,918.90 - Step 6: Final answer
x = 521,651,033.55
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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.