Finding the Fourth Proportional to 813,507.69, 1,122,616.27 and 445,972.26
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Solution
The fourth proportional to 813,507.69, 1,122,616.27 and 445,972.26 is: 615,428.38
Step by Step Solution
- Step 1: Write the proportion equation
813,507.69 : 1,122,616.27 = 445,972.26 : x - Step 2: Convert to fraction form
813,507.69/1,122,616.27 = 445,972.26/x - Step 3: Cross multiply
813,507.69x = 1,122,616.27 × 445,972.26 - Step 4: Simplify right side
813,507.69x = 500,655,715,044.67 - Step 5: Solve for x
x = 500,655,715,044.67/813,507.69 - Step 6: Final answer
x = 615,428.38
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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.