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Finding the Fourth Proportional to 620,408.40, 929,057.40 and 495,992.40

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Solution

The fourth proportional to 620,408.40, 929,057.40 and 495,992.40 is: 742,745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,408.40 : 929,057.40 = 495,992.40 : x
  2. Step 2: Convert to fraction form
    620,408.40/929,057.40 = 495,992.40/x
  3. Step 3: Cross multiply
    620,408.40x = 929,057.40 × 495,992.40
  4. Step 4: Simplify right side
    620,408.40x = 460,805,409,563.76
  5. Step 5: Solve for x
    x = 460,805,409,563.76/620,408.40
  6. Step 6: Final answer
    x = 742,745.28

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1.5x scale

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.