Finding the Fourth Proportional to 839,720.81, 1,259,451.35 and 307,117.28
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Solution
The fourth proportional to 839,720.81, 1,259,451.35 and 307,117.28 is: 460,628.42
Step by Step Solution
- Step 1: Write the proportion equation
839,720.81 : 1,259,451.35 = 307,117.28 : x - Step 2: Convert to fraction form
839,720.81/1,259,451.35 = 307,117.28/x - Step 3: Cross multiply
839,720.81x = 1,259,451.35 × 307,117.28 - Step 4: Simplify right side
839,720.81x = 386,799,271,368.74 - Step 5: Solve for x
x = 386,799,271,368.74/839,720.81 - Step 6: Final answer
x = 460,628.42
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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.