Finding the Fourth Proportional to 875,123.98, 1,207,781.07 and 512,686.15
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Solution
The fourth proportional to 875,123.98, 1,207,781.07 and 512,686.15 is: 707,571.32
Step by Step Solution
- Step 1: Write the proportion equation
875,123.98 : 1,207,781.07 = 512,686.15 : x - Step 2: Convert to fraction form
875,123.98/1,207,781.07 = 512,686.15/x - Step 3: Cross multiply
875,123.98x = 1,207,781.07 × 512,686.15 - Step 4: Simplify right side
875,123.98x = 619,212,626,821.18 - Step 5: Solve for x
x = 619,212,626,821.18/875,123.98 - Step 6: Final answer
x = 707,571.32
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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.