Finding the Fourth Proportional to 663,435,668.61, 915,872,677.70 and 412,620,907.68
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Solution
The fourth proportional to 663,435,668.61, 915,872,677.70 and 412,620,907.68 is: 569,622,999.59
Step by Step Solution
- Step 1: Write the proportion equation
663,435,668.61 : 915,872,677.70 = 412,620,907.68 : x - Step 2: Convert to fraction form
663,435,668.61/915,872,677.70 = 412,620,907.68/x - Step 3: Cross multiply
663,435,668.61x = 915,872,677.70 × 412,620,907.68 - Step 4: Simplify right side
663,435,668.61x = 377,908,215,589,823,040 - Step 5: Solve for x
x = 377,908,215,589,823,040/663,435,668.61 - Step 6: Final answer
x = 569,622,999.59
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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.