Finding the Fourth Proportional to 712,805.26, 983,673.06 and 390,521.74
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Solution
The fourth proportional to 712,805.26, 983,673.06 and 390,521.74 is: 538,920.99
Step by Step Solution
- Step 1: Write the proportion equation
712,805.26 : 983,673.06 = 390,521.74 : x - Step 2: Convert to fraction form
712,805.26/983,673.06 = 390,521.74/x - Step 3: Cross multiply
712,805.26x = 983,673.06 × 390,521.74 - Step 4: Simplify right side
712,805.26x = 384,145,714,982.32 - Step 5: Solve for x
x = 384,145,714,982.32/712,805.26 - Step 6: Final answer
x = 538,920.99
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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.