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Finding the Fourth Proportional to 570,942.31, 787,842.97 and 316,245.91

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Solution

The fourth proportional to 570,942.31, 787,842.97 and 316,245.91 is: 436,387.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,942.31 : 787,842.97 = 316,245.91 : x
  2. Step 2: Convert to fraction form
    570,942.31/787,842.97 = 316,245.91/x
  3. Step 3: Cross multiply
    570,942.31x = 787,842.97 × 316,245.91
  4. Step 4: Simplify right side
    570,942.31x = 249,152,116,984.75
  5. Step 5: Solve for x
    x = 249,152,116,984.75/570,942.31
  6. Step 6: Final answer
    x = 436,387.55

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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.