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Finding the Fourth Proportional to 456,851.20, 683,964.60 and 279,704.20

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Solution

The fourth proportional to 456,851.20, 683,964.60 and 279,704.20 is: 418,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,851.20 : 683,964.60 = 279,704.20 : x
  2. Step 2: Convert to fraction form
    456,851.20/683,964.60 = 279,704.20/x
  3. Step 3: Cross multiply
    456,851.20x = 683,964.60 × 279,704.20
  4. Step 4: Simplify right side
    456,851.20x = 191,307,771,271.32
  5. Step 5: Solve for x
    x = 191,307,771,271.32/456,851.20
  6. Step 6: Final answer
    x = 418,752.91

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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.