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Finding the Fourth Proportional to 392,014.80, 587,417.40 and 291,704.40

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Solution

The fourth proportional to 392,014.80, 587,417.40 and 291,704.40 is: 437,106.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,014.80 : 587,417.40 = 291,704.40 : x
  2. Step 2: Convert to fraction form
    392,014.80/587,417.40 = 291,704.40/x
  3. Step 3: Cross multiply
    392,014.80x = 587,417.40 × 291,704.40
  4. Step 4: Simplify right side
    392,014.80x = 171,352,240,216.56
  5. Step 5: Solve for x
    x = 171,352,240,216.56/392,014.80
  6. Step 6: Final answer
    x = 437,106.56

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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.