Home / 488,336.90-731,521.20-328,904.60

Finding the Fourth Proportional to 488,336.90, 731,521.20 and 328,904.60

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Solution

The fourth proportional to 488,336.90, 731,521.20 and 328,904.60 is: 492,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,336.90 : 731,521.20 = 328,904.60 : x
  2. Step 2: Convert to fraction form
    488,336.90/731,521.20 = 328,904.60/x
  3. Step 3: Cross multiply
    488,336.90x = 731,521.20 × 328,904.60
  4. Step 4: Simplify right side
    488,336.90x = 240,600,687,677.52
  5. Step 5: Solve for x
    x = 240,600,687,677.52/488,336.90
  6. Step 6: Final answer
    x = 492,694.06

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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.