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Finding the Fourth Proportional to 570,843.32, 787,789.73 and 316,194.48

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Solution

The fourth proportional to 570,843.32, 787,789.73 and 316,194.48 is: 436,362.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,843.32 : 787,789.73 = 316,194.48 : x
  2. Step 2: Convert to fraction form
    570,843.32/787,789.73 = 316,194.48/x
  3. Step 3: Cross multiply
    570,843.32x = 787,789.73 × 316,194.48
  4. Step 4: Simplify right side
    570,843.32x = 249,094,764,817.18
  5. Step 5: Solve for x
    x = 249,094,764,817.18/570,843.32
  6. Step 6: Final answer
    x = 436,362.76

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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.