Finding the Fourth Proportional to 430,020.80, 641,402.92 and 373,415.78
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Solution
The fourth proportional to 430,020.80, 641,402.92 and 373,415.78 is: 556,972.99
Step by Step Solution
- Step 1: Write the proportion equation
430,020.80 : 641,402.92 = 373,415.78 : x - Step 2: Convert to fraction form
430,020.80/641,402.92 = 373,415.78/x - Step 3: Cross multiply
430,020.80x = 641,402.92 × 373,415.78 - Step 4: Simplify right side
430,020.80x = 239,509,971,666.08 - Step 5: Solve for x
x = 239,509,971,666.08/430,020.80 - Step 6: Final answer
x = 556,972.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.