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Finding the Fourth Proportional to 570,957.28, 787,863.72 and 316,260.88

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Solution

The fourth proportional to 570,957.28, 787,863.72 and 316,260.88 is: 436,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,957.28 : 787,863.72 = 316,260.88 : x
  2. Step 2: Convert to fraction form
    570,957.28/787,863.72 = 316,260.88/x
  3. Step 3: Cross multiply
    570,957.28x = 787,863.72 × 316,260.88
  4. Step 4: Simplify right side
    570,957.28x = 249,170,473,407.27
  5. Step 5: Solve for x
    x = 249,170,473,407.27/570,957.28
  6. Step 6: Final answer
    x = 436,408.26

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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.