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Finding the Fourth Proportional to 392,438.80, 588,658.20 and 364,445.20

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Solution

The fourth proportional to 392,438.80, 588,658.20 and 364,445.20 is: 546,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,438.80 : 588,658.20 = 364,445.20 : x
  2. Step 2: Convert to fraction form
    392,438.80/588,658.20 = 364,445.20/x
  3. Step 3: Cross multiply
    392,438.80x = 588,658.20 × 364,445.20
  4. Step 4: Simplify right side
    392,438.80x = 214,533,655,430.64
  5. Step 5: Solve for x
    x = 214,533,655,430.64/392,438.80
  6. Step 6: Final answer
    x = 546,667.80

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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.