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Finding the Fourth Proportional to 664,339.20, 994,435.20 and 523,334.40

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Solution

The fourth proportional to 664,339.20, 994,435.20 and 523,334.40 is: 783,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,339.20 : 994,435.20 = 523,334.40 : x
  2. Step 2: Convert to fraction form
    664,339.20/994,435.20 = 523,334.40/x
  3. Step 3: Cross multiply
    664,339.20x = 994,435.20 × 523,334.40
  4. Step 4: Simplify right side
    664,339.20x = 520,422,148,730.88
  5. Step 5: Solve for x
    x = 520,422,148,730.88/664,339.20
  6. Step 6: Final answer
    x = 783,368.12

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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.