Finding the Fourth Proportional to 402,012,373.12, 602,890,722.24 and 129,319,665.28
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Solution
The fourth proportional to 402,012,373.12, 602,890,722.24 and 129,319,665.28 is: 193,938,375.07
Step by Step Solution
- Step 1: Write the proportion equation
402,012,373.12 : 602,890,722.24 = 129,319,665.28 : x - Step 2: Convert to fraction form
402,012,373.12/602,890,722.24 = 129,319,665.28/x - Step 3: Cross multiply
402,012,373.12x = 602,890,722.24 × 129,319,665.28 - Step 4: Simplify right side
402,012,373.12x = 77,965,626,400,494,256 - Step 5: Solve for x
x = 77,965,626,400,494,256/402,012,373.12 - Step 6: Final answer
x = 193,938,375.07
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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.