Home / 678,425.22-1,017,728.82-358,731.72

Finding the Fourth Proportional to 678,425.22, 1,017,728.82 and 358,731.72

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Solution

The fourth proportional to 678,425.22, 1,017,728.82 and 358,731.72 is: 538,145.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,425.22 : 1,017,728.82 = 358,731.72 : x
  2. Step 2: Convert to fraction form
    678,425.22/1,017,728.82 = 358,731.72/x
  3. Step 3: Cross multiply
    678,425.22x = 1,017,728.82 × 358,731.72
  4. Step 4: Simplify right side
    678,425.22x = 365,091,610,092.17
  5. Step 5: Solve for x
    x = 365,091,610,092.17/678,425.22
  6. Step 6: Final answer
    x = 538,145.69

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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.