Finding the Fourth Proportional to 781,565.91, 1,078,763.73 and 442,230.99
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Solution
The fourth proportional to 781,565.91, 1,078,763.73 and 442,230.99 is: 610,393.50
Step by Step Solution
- Step 1: Write the proportion equation
781,565.91 : 1,078,763.73 = 442,230.99 : x - Step 2: Convert to fraction form
781,565.91/1,078,763.73 = 442,230.99/x - Step 3: Cross multiply
781,565.91x = 1,078,763.73 × 442,230.99 - Step 4: Simplify right side
781,565.91x = 477,062,752,293.99 - Step 5: Solve for x
x = 477,062,752,293.99/781,565.91 - Step 6: Final answer
x = 610,393.50
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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.