Home / 413,037.20-618,778.20-212,675.60

Finding the Fourth Proportional to 413,037.20, 618,778.20 and 212,675.60

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Solution

The fourth proportional to 413,037.20, 618,778.20 and 212,675.60 is: 318,613.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,037.20 : 618,778.20 = 212,675.60 : x
  2. Step 2: Convert to fraction form
    413,037.20/618,778.20 = 212,675.60/x
  3. Step 3: Cross multiply
    413,037.20x = 618,778.20 × 212,675.60
  4. Step 4: Simplify right side
    413,037.20x = 131,599,024,951.92
  5. Step 5: Solve for x
    x = 131,599,024,951.92/413,037.20
  6. Step 6: Final answer
    x = 318,613.01

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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.