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Finding the Fourth Proportional to 439,829.40, 659,225.70 and 328,891.80

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Solution

The fourth proportional to 439,829.40, 659,225.70 and 328,891.80 is: 492,950.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,829.40 : 659,225.70 = 328,891.80 : x
  2. Step 2: Convert to fraction form
    439,829.40/659,225.70 = 328,891.80/x
  3. Step 3: Cross multiply
    439,829.40x = 659,225.70 × 328,891.80
  4. Step 4: Simplify right side
    439,829.40x = 216,813,927,079.26
  5. Step 5: Solve for x
    x = 216,813,927,079.26/439,829.40
  6. Step 6: Final answer
    x = 492,950.06

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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.