Home / 439,349.40-658,505.70-328,411.80

Finding the Fourth Proportional to 439,349.40, 658,505.70 and 328,411.80

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Solution

The fourth proportional to 439,349.40, 658,505.70 and 328,411.80 is: 492,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,349.40 : 658,505.70 = 328,411.80 : x
  2. Step 2: Convert to fraction form
    439,349.40/658,505.70 = 328,411.80/x
  3. Step 3: Cross multiply
    439,349.40x = 658,505.70 × 328,411.80
  4. Step 4: Simplify right side
    439,349.40x = 216,261,042,247.26
  5. Step 5: Solve for x
    x = 216,261,042,247.26/439,349.40
  6. Step 6: Final answer
    x = 492,230.20

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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.