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Finding the Fourth Proportional to 404,415.92, 607,148.76 and 310,987.28

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Solution

The fourth proportional to 404,415.92, 607,148.76 and 310,987.28 is: 466,884.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,415.92 : 607,148.76 = 310,987.28 : x
  2. Step 2: Convert to fraction form
    404,415.92/607,148.76 = 310,987.28/x
  3. Step 3: Cross multiply
    404,415.92x = 607,148.76 × 310,987.28
  4. Step 4: Simplify right side
    404,415.92x = 188,815,541,427.77
  5. Step 5: Solve for x
    x = 188,815,541,427.77/404,415.92
  6. Step 6: Final answer
    x = 466,884.54

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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.