Finding the Fourth Proportional to 670,331.70, 1,005,497.55 and 355,403.70
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Solution
The fourth proportional to 670,331.70, 1,005,497.55 and 355,403.70 is: 533,105.55
Step by Step Solution
- Step 1: Write the proportion equation
670,331.70 : 1,005,497.55 = 355,403.70 : x - Step 2: Convert to fraction form
670,331.70/1,005,497.55 = 355,403.70/x - Step 3: Cross multiply
670,331.70x = 1,005,497.55 × 355,403.70 - Step 4: Simplify right side
670,331.70x = 357,357,549,610.94 - Step 5: Solve for x
x = 357,357,549,610.94/670,331.70 - Step 6: Final answer
x = 533,105.55
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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.