Finding the Fourth Proportional to 411,212,031.12, 616,757,373.84 and 120,000,963.60
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Solution
The fourth proportional to 411,212,031.12, 616,757,373.84 and 120,000,963.60 is: 179,983,739.69
Step by Step Solution
- Step 1: Write the proportion equation
411,212,031.12 : 616,757,373.84 = 120,000,963.60 : x - Step 2: Convert to fraction form
411,212,031.12/616,757,373.84 = 120,000,963.60/x - Step 3: Cross multiply
411,212,031.12x = 616,757,373.84 × 120,000,963.60 - Step 4: Simplify right side
411,212,031.12x = 74,011,479,168,205,440 - Step 5: Solve for x
x = 74,011,479,168,205,440/411,212,031.12 - Step 6: Final answer
x = 179,983,739.69
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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.