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Finding the Fourth Proportional to 619,909.70, 929,950.95 and 264,920.90

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Solution

The fourth proportional to 619,909.70, 929,950.95 and 264,920.90 is: 397,418.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,909.70 : 929,950.95 = 264,920.90 : x
  2. Step 2: Convert to fraction form
    619,909.70/929,950.95 = 264,920.90/x
  3. Step 3: Cross multiply
    619,909.70x = 929,950.95 × 264,920.90
  4. Step 4: Simplify right side
    619,909.70x = 246,363,442,629.86
  5. Step 5: Solve for x
    x = 246,363,442,629.86/619,909.70
  6. Step 6: Final answer
    x = 397,418.27

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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.