Finding the Fourth Proportional to 876,070.30, 1,209,235.57 and 513,572.62
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Solution
The fourth proportional to 876,070.30, 1,209,235.57 and 513,572.62 is: 708,881.79
Step by Step Solution
- Step 1: Write the proportion equation
876,070.30 : 1,209,235.57 = 513,572.62 : x - Step 2: Convert to fraction form
876,070.30/1,209,235.57 = 513,572.62/x - Step 3: Cross multiply
876,070.30x = 1,209,235.57 × 513,572.62 - Step 4: Simplify right side
876,070.30x = 621,030,284,302.92 - Step 5: Solve for x
x = 621,030,284,302.92/876,070.30 - Step 6: Final answer
x = 708,881.79
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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.