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Finding the Fourth Proportional to 570,930.60, 787,932.36 and 316,305.48

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Solution

The fourth proportional to 570,930.60, 787,932.36 and 316,305.48 is: 436,528.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,930.60 : 787,932.36 = 316,305.48 : x
  2. Step 2: Convert to fraction form
    570,930.60/787,932.36 = 316,305.48/x
  3. Step 3: Cross multiply
    570,930.60x = 787,932.36 × 316,305.48
  4. Step 4: Simplify right side
    570,930.60x = 249,227,323,337.33
  5. Step 5: Solve for x
    x = 249,227,323,337.33/570,930.60
  6. Step 6: Final answer
    x = 436,528.23

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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.