Finding the Fourth Proportional to 415,420.07, 623,130.11 and 99,876.98
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Solution
The fourth proportional to 415,420.07, 623,130.11 and 99,876.98 is: 149,815.46
Step by Step Solution
- Step 1: Write the proportion equation
415,420.07 : 623,130.11 = 99,876.98 : x - Step 2: Convert to fraction form
415,420.07/623,130.11 = 99,876.98/x - Step 3: Cross multiply
415,420.07x = 623,130.11 × 99,876.98 - Step 4: Simplify right side
415,420.07x = 62,236,349,918.83 - Step 5: Solve for x
x = 62,236,349,918.83/415,420.07 - Step 6: Final answer
x = 149,815.46
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1.5x scale
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.