Finding the Fourth Proportional to 1,329,987.02, 1,995,260.75 and 431,358.74
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Solution
The fourth proportional to 1,329,987.02, 1,995,260.75 and 431,358.74 is: 647,128.99
Step by Step Solution
- Step 1: Write the proportion equation
1,329,987.02 : 1,995,260.75 = 431,358.74 : x - Step 2: Convert to fraction form
1,329,987.02/1,995,260.75 = 431,358.74/x - Step 3: Cross multiply
1,329,987.02x = 1,995,260.75 × 431,358.74 - Step 4: Simplify right side
1,329,987.02x = 860,673,150,958.36 - Step 5: Solve for x
x = 860,673,150,958.36/1,329,987.02 - Step 6: Final answer
x = 647,128.99
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1.5x scale
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.