Finding the Fourth Proportional to 509,128.76, 704,120.02 and 445,355.80
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Solution
The fourth proportional to 509,128.76, 704,120.02 and 445,355.80 is: 615,922.65
Step by Step Solution
- Step 1: Write the proportion equation
509,128.76 : 704,120.02 = 445,355.80 : x - Step 2: Convert to fraction form
509,128.76/704,120.02 = 445,355.80/x - Step 3: Cross multiply
509,128.76x = 704,120.02 × 445,355.80 - Step 4: Simplify right side
509,128.76x = 313,583,934,803.12 - Step 5: Solve for x
x = 313,583,934,803.12/509,128.76 - Step 6: Final answer
x = 615,922.65
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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.