Home / 439,007.20-658,510.80-328,415.20

Finding the Fourth Proportional to 439,007.20, 658,510.80 and 328,415.20

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Solution

The fourth proportional to 439,007.20, 658,510.80 and 328,415.20 is: 492,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,007.20 : 658,510.80 = 328,415.20 : x
  2. Step 2: Convert to fraction form
    439,007.20/658,510.80 = 328,415.20/x
  3. Step 3: Cross multiply
    439,007.20x = 658,510.80 × 328,415.20
  4. Step 4: Simplify right side
    439,007.20x = 216,264,956,084.16
  5. Step 5: Solve for x
    x = 216,264,956,084.16/439,007.20
  6. Step 6: Final answer
    x = 492,622.80

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Similar ratio
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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.