Finding the Fourth Proportional to 685,841.09, 946,420.21 and 375,681.99
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Solution
The fourth proportional to 685,841.09, 946,420.21 and 375,681.99 is: 518,418.96
Step by Step Solution
- Step 1: Write the proportion equation
685,841.09 : 946,420.21 = 375,681.99 : x - Step 2: Convert to fraction form
685,841.09/946,420.21 = 375,681.99/x - Step 3: Cross multiply
685,841.09x = 946,420.21 × 375,681.99 - Step 4: Simplify right side
685,841.09x = 355,553,027,869.02 - Step 5: Solve for x
x = 355,553,027,869.02/685,841.09 - Step 6: Final answer
x = 518,418.96
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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.