Finding the Fourth Proportional to 491,025,373.90, 678,501,390.67 and 349,651,152.99
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Solution
The fourth proportional to 491,025,373.90, 678,501,390.67 and 349,651,152.99 is: 483,149,764.06
Step by Step Solution
- Step 1: Write the proportion equation
491,025,373.90 : 678,501,390.67 = 349,651,152.99 : x - Step 2: Convert to fraction form
491,025,373.90/678,501,390.67 = 349,651,152.99/x - Step 3: Cross multiply
491,025,373.90x = 678,501,390.67 × 349,651,152.99 - Step 4: Simplify right side
491,025,373.90x = 237,238,793,547,943,168 - Step 5: Solve for x
x = 237,238,793,547,943,168/491,025,373.90 - Step 6: Final answer
x = 483,149,764.06
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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.