Finding the Fourth Proportional to 875,461.80, 1,312,220.70 and 342,805.80
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Solution
The fourth proportional to 875,461.80, 1,312,220.70 and 342,805.80 is: 513,828.09
Step by Step Solution
- Step 1: Write the proportion equation
875,461.80 : 1,312,220.70 = 342,805.80 : x - Step 2: Convert to fraction form
875,461.80/1,312,220.70 = 342,805.80/x - Step 3: Cross multiply
875,461.80x = 1,312,220.70 × 342,805.80 - Step 4: Simplify right side
875,461.80x = 449,836,866,840.06 - Step 5: Solve for x
x = 449,836,866,840.06/875,461.80 - Step 6: Final answer
x = 513,828.09
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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.