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Finding the Fourth Proportional to 543,629.60, 813,831.60 and 404,007.20

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Solution

The fourth proportional to 543,629.60, 813,831.60 and 404,007.20 is: 604,812.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,629.60 : 813,831.60 = 404,007.20 : x
  2. Step 2: Convert to fraction form
    543,629.60/813,831.60 = 404,007.20/x
  3. Step 3: Cross multiply
    543,629.60x = 813,831.60 × 404,007.20
  4. Step 4: Simplify right side
    543,629.60x = 328,793,825,987.52
  5. Step 5: Solve for x
    x = 328,793,825,987.52/543,629.60
  6. Step 6: Final answer
    x = 604,812.22

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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.