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Finding the Fourth Proportional to 518,488.32, 776,386.56 and 444,087.36

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Solution

The fourth proportional to 518,488.32, 776,386.56 and 444,087.36 is: 664,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,488.32 : 776,386.56 = 444,087.36 : x
  2. Step 2: Convert to fraction form
    518,488.32/776,386.56 = 444,087.36/x
  3. Step 3: Cross multiply
    518,488.32x = 776,386.56 × 444,087.36
  4. Step 4: Simplify right side
    518,488.32x = 344,783,457,769.88
  5. Step 5: Solve for x
    x = 344,783,457,769.88/518,488.32
  6. Step 6: Final answer
    x = 664,978.25

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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.