Finding the Fourth Proportional to 645,774.68, 891,155.16 and 373,854.08
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Solution
The fourth proportional to 645,774.68, 891,155.16 and 373,854.08 is: 515,910.58
Step by Step Solution
- Step 1: Write the proportion equation
645,774.68 : 891,155.16 = 373,854.08 : x - Step 2: Convert to fraction form
645,774.68/891,155.16 = 373,854.08/x - Step 3: Cross multiply
645,774.68x = 891,155.16 × 373,854.08 - Step 4: Simplify right side
645,774.68x = 333,161,992,479.05 - Step 5: Solve for x
x = 333,161,992,479.05/645,774.68 - Step 6: Final answer
x = 515,910.58
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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.