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Finding the Fourth Proportional to 570,813.13, 787,722.11 and 316,180.72

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Solution

The fourth proportional to 570,813.13, 787,722.11 and 316,180.72 is: 436,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,813.13 : 787,722.11 = 316,180.72 : x
  2. Step 2: Convert to fraction form
    570,813.13/787,722.11 = 316,180.72/x
  3. Step 3: Cross multiply
    570,813.13x = 787,722.11 × 316,180.72
  4. Step 4: Simplify right side
    570,813.13x = 249,062,540,751.56
  5. Step 5: Solve for x
    x = 249,062,540,751.56/570,813.13
  6. Step 6: Final answer
    x = 436,329.39

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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.