Home / 665,629.60-998,590.20-328,831.60

Finding the Fourth Proportional to 665,629.60, 998,590.20 and 328,831.60

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Solution

The fourth proportional to 665,629.60, 998,590.20 and 328,831.60 is: 493,319.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,629.60 : 998,590.20 = 328,831.60 : x
  2. Step 2: Convert to fraction form
    665,629.60/998,590.20 = 328,831.60/x
  3. Step 3: Cross multiply
    665,629.60x = 998,590.20 × 328,831.60
  4. Step 4: Simplify right side
    665,629.60x = 328,368,013,210.32
  5. Step 5: Solve for x
    x = 328,368,013,210.32/665,629.60
  6. Step 6: Final answer
    x = 493,319.43

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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.