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Finding the Fourth Proportional to 570,903.96, 787,813.38 and 316,236.72

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Solution

The fourth proportional to 570,903.96, 787,813.38 and 316,236.72 is: 436,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,903.96 : 787,813.38 = 316,236.72 : x
  2. Step 2: Convert to fraction form
    570,903.96/787,813.38 = 316,236.72/x
  3. Step 3: Cross multiply
    570,903.96x = 787,813.38 × 316,236.72
  4. Step 4: Simplify right side
    570,903.96x = 249,135,519,263.31
  5. Step 5: Solve for x
    x = 249,135,519,263.31/570,903.96
  6. Step 6: Final answer
    x = 436,387.79

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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.