Finding the Fourth Proportional to 553,543.80, 763,963.02 and 311,873.02
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Solution
The fourth proportional to 553,543.80, 763,963.02 and 311,873.02 is: 430,425.66
Step by Step Solution
- Step 1: Write the proportion equation
553,543.80 : 763,963.02 = 311,873.02 : x - Step 2: Convert to fraction form
553,543.80/763,963.02 = 311,873.02/x - Step 3: Cross multiply
553,543.80x = 763,963.02 × 311,873.02 - Step 4: Simplify right side
553,543.80x = 238,259,454,215.72 - Step 5: Solve for x
x = 238,259,454,215.72/553,543.80 - Step 6: Final answer
x = 430,425.66
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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.