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Finding the Fourth Proportional to 452,804.40, 678,319.20 and 262,866.66

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Solution

The fourth proportional to 452,804.40, 678,319.20 and 262,866.66 is: 393,784.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,804.40 : 678,319.20 = 262,866.66 : x
  2. Step 2: Convert to fraction form
    452,804.40/678,319.20 = 262,866.66/x
  3. Step 3: Cross multiply
    452,804.40x = 678,319.20 × 262,866.66
  4. Step 4: Simplify right side
    452,804.40x = 178,307,502,517.87
  5. Step 5: Solve for x
    x = 178,307,502,517.87/452,804.40
  6. Step 6: Final answer
    x = 393,784.83

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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.