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Finding the Fourth Proportional to 570,458.46, 787,229.97 and 308,813.07

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Solution

The fourth proportional to 570,458.46, 787,229.97 and 308,813.07 is: 426,160.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,458.46 : 787,229.97 = 308,813.07 : x
  2. Step 2: Convert to fraction form
    570,458.46/787,229.97 = 308,813.07/x
  3. Step 3: Cross multiply
    570,458.46x = 787,229.97 × 308,813.07
  4. Step 4: Simplify right side
    570,458.46x = 243,106,903,831.71
  5. Step 5: Solve for x
    x = 243,106,903,831.71/570,458.46
  6. Step 6: Final answer
    x = 426,160.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.