Finding the Fourth Proportional to 672,775.68, 928,460.16 and 386,307.84
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Solution
The fourth proportional to 672,775.68, 928,460.16 and 386,307.84 is: 533,121.89
Step by Step Solution
- Step 1: Write the proportion equation
672,775.68 : 928,460.16 = 386,307.84 : x - Step 2: Convert to fraction form
672,775.68/928,460.16 = 386,307.84/x - Step 3: Cross multiply
672,775.68x = 928,460.16 × 386,307.84 - Step 4: Simplify right side
672,775.68x = 358,671,438,935.65 - Step 5: Solve for x
x = 358,671,438,935.65/672,775.68 - Step 6: Final answer
x = 533,121.89
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1.5x scale
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.