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Finding the Fourth Proportional to 570,993.75, 787,997.21 and 316,344.94

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Solution

The fourth proportional to 570,993.75, 787,997.21 and 316,344.94 is: 436,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,993.75 : 787,997.21 = 316,344.94 : x
  2. Step 2: Convert to fraction form
    570,993.75/787,997.21 = 316,344.94/x
  3. Step 3: Cross multiply
    570,993.75x = 787,997.21 × 316,344.94
  4. Step 4: Simplify right side
    570,993.75x = 249,278,926,565.90
  5. Step 5: Solve for x
    x = 249,278,926,565.90/570,993.75
  6. Step 6: Final answer
    x = 436,570.32

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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.