Finding the Fourth Proportional to 465,331,807.80, 697,997,711.70 and 393,668,191.80
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Solution
The fourth proportional to 465,331,807.80, 697,997,711.70 and 393,668,191.80 is: 590,502,287.70
Step by Step Solution
- Step 1: Write the proportion equation
465,331,807.80 : 697,997,711.70 = 393,668,191.80 : x - Step 2: Convert to fraction form
465,331,807.80/697,997,711.70 = 393,668,191.80/x - Step 3: Cross multiply
465,331,807.80x = 697,997,711.70 × 393,668,191.80 - Step 4: Simplify right side
465,331,807.80x = 274,779,497,045,476,736 - Step 5: Solve for x
x = 274,779,497,045,476,736/465,331,807.80 - Step 6: Final answer
x = 590,502,287.70
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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.