Home / 669,408.80-1,002,752.40-415,911.20

Finding the Fourth Proportional to 669,408.80, 1,002,752.40 and 415,911.20

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Solution

The fourth proportional to 669,408.80, 1,002,752.40 and 415,911.20 is: 623,021.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,408.80 : 1,002,752.40 = 415,911.20 : x
  2. Step 2: Convert to fraction form
    669,408.80/1,002,752.40 = 415,911.20/x
  3. Step 3: Cross multiply
    669,408.80x = 1,002,752.40 × 415,911.20
  4. Step 4: Simplify right side
    669,408.80x = 417,055,953,986.88
  5. Step 5: Solve for x
    x = 417,055,953,986.88/669,408.80
  6. Step 6: Final answer
    x = 623,021.32

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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.