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Finding the Fourth Proportional to 570,617.97, 787,443.17 and 315,963.69

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Solution

The fourth proportional to 570,617.97, 787,443.17 and 315,963.69 is: 436,024.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,617.97 : 787,443.17 = 315,963.69 : x
  2. Step 2: Convert to fraction form
    570,617.97/787,443.17 = 315,963.69/x
  3. Step 3: Cross multiply
    570,617.97x = 787,443.17 × 315,963.69
  4. Step 4: Simplify right side
    570,617.97x = 248,803,446,903.06
  5. Step 5: Solve for x
    x = 248,803,446,903.06/570,617.97
  6. Step 6: Final answer
    x = 436,024.56

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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.