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Finding the Fourth Proportional to 404,928,003.90, 607,392,005.85 and 267,178,496.70

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Solution

The fourth proportional to 404,928,003.90, 607,392,005.85 and 267,178,496.70 is: 400,767,745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,928,003.90 : 607,392,005.85 = 267,178,496.70 : x
  2. Step 2: Convert to fraction form
    404,928,003.90/607,392,005.85 = 267,178,496.70/x
  3. Step 3: Cross multiply
    404,928,003.90x = 607,392,005.85 × 267,178,496.70
  4. Step 4: Simplify right side
    404,928,003.90x = 162,282,083,030,600,608
  5. Step 5: Solve for x
    x = 162,282,083,030,600,608/404,928,003.90
  6. Step 6: Final answer
    x = 400,767,745.05

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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.