Finding the Fourth Proportional to 429,875.05, 644,201.51 and 316,664.99
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Solution
The fourth proportional to 429,875.05, 644,201.51 and 316,664.99 is: 474,547.35
Step by Step Solution
- Step 1: Write the proportion equation
429,875.05 : 644,201.51 = 316,664.99 : x - Step 2: Convert to fraction form
429,875.05/644,201.51 = 316,664.99/x - Step 3: Cross multiply
429,875.05x = 644,201.51 × 316,664.99 - Step 4: Simplify right side
429,875.05x = 203,996,065,957.19 - Step 5: Solve for x
x = 203,996,065,957.19/429,875.05 - Step 6: Final answer
x = 474,547.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.