Finding the Fourth Proportional to 759,664.74, 1,048,319.40 and 420,125.70
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Solution
The fourth proportional to 759,664.74, 1,048,319.40 and 420,125.70 is: 579,763.54
Step by Step Solution
- Step 1: Write the proportion equation
759,664.74 : 1,048,319.40 = 420,125.70 : x - Step 2: Convert to fraction form
759,664.74/1,048,319.40 = 420,125.70/x - Step 3: Cross multiply
759,664.74x = 1,048,319.40 × 420,125.70 - Step 4: Simplify right side
759,664.74x = 440,425,921,748.58 - Step 5: Solve for x
x = 440,425,921,748.58/759,664.74 - Step 6: Final answer
x = 579,763.54
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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.