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Finding the Fourth Proportional to 570,883.92, 787,809.96 and 316,229.76

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Solution

The fourth proportional to 570,883.92, 787,809.96 and 316,229.76 is: 436,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,883.92 : 787,809.96 = 316,229.76 : x
  2. Step 2: Convert to fraction form
    570,883.92/787,809.96 = 316,229.76/x
  3. Step 3: Cross multiply
    570,883.92x = 787,809.96 × 316,229.76
  4. Step 4: Simplify right side
    570,883.92x = 249,128,954,576.41
  5. Step 5: Solve for x
    x = 249,128,954,576.41/570,883.92
  6. Step 6: Final answer
    x = 436,391.61

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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.