Finding the Fourth Proportional to 641,923.99, 885,844.26 and 355,437.93
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Solution
The fourth proportional to 641,923.99, 885,844.26 and 355,437.93 is: 490,498.34
Step by Step Solution
- Step 1: Write the proportion equation
641,923.99 : 885,844.26 = 355,437.93 : x - Step 2: Convert to fraction form
641,923.99/885,844.26 = 355,437.93/x - Step 3: Cross multiply
641,923.99x = 885,844.26 × 355,437.93 - Step 4: Simplify right side
641,923.99x = 314,862,650,076.78 - Step 5: Solve for x
x = 314,862,650,076.78/641,923.99 - Step 6: Final answer
x = 490,498.34
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1.5x scale
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.