Home / 439,359.40-658,520.70-328,421.80

Finding the Fourth Proportional to 439,359.40, 658,520.70 and 328,421.80

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Solution

The fourth proportional to 439,359.40, 658,520.70 and 328,421.80 is: 492,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,359.40 : 658,520.70 = 328,421.80 : x
  2. Step 2: Convert to fraction form
    439,359.40/658,520.70 = 328,421.80/x
  3. Step 3: Cross multiply
    439,359.40x = 658,520.70 × 328,421.80
  4. Step 4: Simplify right side
    439,359.40x = 216,272,553,631.26
  5. Step 5: Solve for x
    x = 216,272,553,631.26/439,359.40
  6. Step 6: Final answer
    x = 492,245.20

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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.