Finding the Fourth Proportional to 814,431.12, 1,124,014.65 and 470,266.17
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Solution
The fourth proportional to 814,431.12, 1,124,014.65 and 470,266.17 is: 649,024.89
Step by Step Solution
- Step 1: Write the proportion equation
814,431.12 : 1,124,014.65 = 470,266.17 : x - Step 2: Convert to fraction form
814,431.12/1,124,014.65 = 470,266.17/x - Step 3: Cross multiply
814,431.12x = 1,124,014.65 × 470,266.17 - Step 4: Simplify right side
814,431.12x = 528,586,064,479.39 - Step 5: Solve for x
x = 528,586,064,479.39/814,431.12 - Step 6: Final answer
x = 649,024.89
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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.