Finding the Fourth Proportional to 640,224,807.24, 883,239,692.76 and 428,599,815.42
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Solution
The fourth proportional to 640,224,807.24, 883,239,692.76 and 428,599,815.42 is: 591,286,630.90
Step by Step Solution
- Step 1: Write the proportion equation
640,224,807.24 : 883,239,692.76 = 428,599,815.42 : x - Step 2: Convert to fraction form
640,224,807.24/883,239,692.76 = 428,599,815.42/x - Step 3: Cross multiply
640,224,807.24x = 883,239,692.76 × 428,599,815.42 - Step 4: Simplify right side
640,224,807.24x = 378,556,369,288,553,536 - Step 5: Solve for x
x = 378,556,369,288,553,536/640,224,807.24 - Step 6: Final answer
x = 591,286,630.90
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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.